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/LuxembourgOctopus.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 11:00:10,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 11:00:10,202 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 11:00:10,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 11:00:10,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 11:00:10,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 11:00:10,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 11:00:10,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 11:00:10,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 11:00:10,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 11:00:10,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 11:00:10,251 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 [2018-09-30 11:00:10,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 11:00:10,279 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 11:00:10,280 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 11:00:10,280 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 11:00:10,283 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 11:00:10,283 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 11:00:10,284 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 11:00:10,284 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 11:00:10,284 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 11:00:10,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 11:00:10,284 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 11:00:10,285 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 11:00:10,285 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 11:00:10,285 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 11:00:10,285 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 11:00:10,285 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 11:00:10,286 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 11:00:10,287 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 11:00:10,287 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 11:00:10,287 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 11:00:10,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 11:00:10,287 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 11:00:10,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 11:00:10,288 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 11:00:10,288 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 11:00:10,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 11:00:10,289 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 11:00:10,289 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 11:00:10,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 11:00:10,289 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 11:00:10,289 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 11:00:10,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 11:00:10,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 11:00:10,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 11:00:10,359 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 11:00:10,360 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 11:00:10,361 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl [2018-09-30 11:00:10,361 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl' [2018-09-30 11:00:10,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 11:00:10,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 11:00:10,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 11:00:10,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 11:00:10,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 11:00:10,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,446 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 11:00:10,447 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 11:00:10,447 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 11:00:10,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 11:00:10,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 11:00:10,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 11:00:10,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 11:00:10,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/1) ... [2018-09-30 11:00:10,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 11:00:10,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 11:00:10,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 11:00:10,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 11:00:10,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (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 [2018-09-30 11:00:10,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 11:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 11:00:10,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 11:00:10,779 INFO L345 CfgBuilder]: Using library mode [2018-09-30 11:00:10,780 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:00:10 BoogieIcfgContainer [2018-09-30 11:00:10,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 11:00:10,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 11:00:10,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 11:00:10,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 11:00:10,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:00:10" (1/2) ... [2018-09-30 11:00:10,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384a365e and model type LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 11:00:10, skipping insertion in model container [2018-09-30 11:00:10,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:00:10" (2/2) ... [2018-09-30 11:00:10,790 INFO L112 eAbstractionObserver]: Analyzing ICFG LuxembourgOctopus.bpl [2018-09-30 11:00:10,802 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 11:00:10,811 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 11:00:10,870 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 11:00:10,871 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 11:00:10,871 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 11:00:10,871 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 11:00:10,872 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 11:00:10,872 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 11:00:10,872 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 11:00:10,872 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 11:00:10,872 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 11:00:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-30 11:00:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 11:00:10,900 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:10,902 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 11:00:10,903 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:10,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-09-30 11:00:10,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:10,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:10,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:10,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:10,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:11,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 11:00:11,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 11:00:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 11:00:11,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 11:00:11,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:11,060 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-30 11:00:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:11,212 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-09-30 11:00:11,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 11:00:11,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 11:00:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:11,238 INFO L225 Difference]: With dead ends: 13 [2018-09-30 11:00:11,238 INFO L226 Difference]: Without dead ends: 5 [2018-09-30 11:00:11,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-30 11:00:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-30 11:00:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-30 11:00:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-30 11:00:11,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-30 11:00:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:11,309 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-30 11:00:11,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 11:00:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-30 11:00:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 11:00:11,309 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:11,309 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 11:00:11,310 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:11,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:11,310 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-09-30 11:00:11,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:11,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:11,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:11,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:11,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:11,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:11,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:11,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:11,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:11,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-09-30 11:00:11,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 11:00:11,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 11:00:11,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:11,628 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-09-30 11:00:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:11,790 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-30 11:00:11,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 11:00:11,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-30 11:00:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:11,793 INFO L225 Difference]: With dead ends: 8 [2018-09-30 11:00:11,794 INFO L226 Difference]: Without dead ends: 6 [2018-09-30 11:00:11,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-30 11:00:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-30 11:00:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-30 11:00:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-30 11:00:11,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-30 11:00:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:11,801 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-30 11:00:11,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 11:00:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-30 11:00:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 11:00:11,802 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:11,802 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-30 11:00:11,802 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:11,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:11,803 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-09-30 11:00:11,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:11,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:11,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:11,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:11,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:11,884 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 [2018-09-30 11:00:11,900 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:11,913 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:11,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:11,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:12,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-09-30 11:00:12,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 11:00:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 11:00:12,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:12,001 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-09-30 11:00:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:12,279 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-30 11:00:12,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 11:00:12,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-30 11:00:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:12,282 INFO L225 Difference]: With dead ends: 9 [2018-09-30 11:00:12,282 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 11:00:12,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 11:00:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 11:00:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 11:00:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 11:00:12,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-30 11:00:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:12,286 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 11:00:12,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 11:00:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 11:00:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 11:00:12,287 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:12,287 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-30 11:00:12,288 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:12,288 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:12,288 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-09-30 11:00:12,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:12,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:12,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:12,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:12,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:12,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:12,409 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-30 11:00:12,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:12,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:12,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-09-30 11:00:12,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 11:00:12,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 11:00:12,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:12,480 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-09-30 11:00:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:12,577 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-30 11:00:12,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 11:00:12,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-09-30 11:00:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:12,578 INFO L225 Difference]: With dead ends: 10 [2018-09-30 11:00:12,579 INFO L226 Difference]: Without dead ends: 8 [2018-09-30 11:00:12,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-30 11:00:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-30 11:00:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-30 11:00:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-30 11:00:12,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-30 11:00:12,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:12,582 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-30 11:00:12,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 11:00:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-30 11:00:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 11:00:12,583 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:12,583 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-30 11:00:12,583 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:12,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-09-30 11:00:12,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:12,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:12,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:12,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,757 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:12,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:12,765 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:12,778 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:12,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:12,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:12,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-09-30 11:00:12,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 11:00:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 11:00:12,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:12,856 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-09-30 11:00:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:12,941 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-30 11:00:12,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 11:00:12,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-09-30 11:00:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:12,942 INFO L225 Difference]: With dead ends: 11 [2018-09-30 11:00:12,942 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 11:00:12,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 11:00:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 11:00:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 11:00:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-30 11:00:12,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-30 11:00:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:12,946 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-30 11:00:12,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 11:00:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-30 11:00:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 11:00:12,946 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:12,947 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-30 11:00:12,947 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:12,947 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-09-30 11:00:12,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:12,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:12,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:12,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:13,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:13,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:13,056 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:13,120 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-30 11:00:13,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:13,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:13,232 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:13,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-09-30 11:00:13,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 11:00:13,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 11:00:13,233 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:13,233 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-09-30 11:00:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:13,711 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-30 11:00:13,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 11:00:13,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-09-30 11:00:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:13,713 INFO L225 Difference]: With dead ends: 12 [2018-09-30 11:00:13,713 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 11:00:13,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 11:00:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 11:00:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 11:00:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 11:00:13,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-09-30 11:00:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:13,717 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 11:00:13,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 11:00:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 11:00:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-30 11:00:13,718 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:13,718 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-09-30 11:00:13,718 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:13,719 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-09-30 11:00:13,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:13,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:13,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:13,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:13,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:13,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:13,807 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 [2018-09-30 11:00:13,820 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:13,850 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-09-30 11:00:13,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:13,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:13,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:13,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-09-30 11:00:13,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 11:00:13,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 11:00:13,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:13,920 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-09-30 11:00:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:14,059 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 11:00:14,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 11:00:14,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-09-30 11:00:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:14,060 INFO L225 Difference]: With dead ends: 13 [2018-09-30 11:00:14,060 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 11:00:14,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:14,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 11:00:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 11:00:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 11:00:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 11:00:14,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-09-30 11:00:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:14,065 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 11:00:14,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 11:00:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 11:00:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 11:00:14,065 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:14,066 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-09-30 11:00:14,066 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:14,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:14,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-09-30 11:00:14,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:14,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:14,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:14,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:14,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:14,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:14,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:14,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:14,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:14,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-09-30 11:00:14,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 11:00:14,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 11:00:14,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:14,316 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2018-09-30 11:00:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:14,417 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-30 11:00:14,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 11:00:14,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2018-09-30 11:00:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:14,418 INFO L225 Difference]: With dead ends: 14 [2018-09-30 11:00:14,419 INFO L226 Difference]: Without dead ends: 12 [2018-09-30 11:00:14,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-30 11:00:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-30 11:00:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-30 11:00:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-30 11:00:14,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-30 11:00:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:14,422 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-30 11:00:14,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 11:00:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-30 11:00:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 11:00:14,423 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:14,423 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-09-30 11:00:14,423 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:14,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:14,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-09-30 11:00:14,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:14,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:14,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:14,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:14,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:14,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:14,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:14,572 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:14,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:14,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:14,679 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:14,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-09-30 11:00:14,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 11:00:14,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 11:00:14,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:14,681 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-09-30 11:00:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:14,829 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-30 11:00:14,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 11:00:14,830 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-09-30 11:00:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:14,830 INFO L225 Difference]: With dead ends: 15 [2018-09-30 11:00:14,830 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 11:00:14,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 11:00:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-30 11:00:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-30 11:00:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-30 11:00:14,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-09-30 11:00:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:14,834 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-30 11:00:14,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 11:00:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-30 11:00:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 11:00:14,834 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:14,834 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-09-30 11:00:14,835 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:14,835 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:14,835 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-09-30 11:00:14,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:14,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:14,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:14,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:14,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:14,975 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 [2018-09-30 11:00:14,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:14,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-30 11:00:14,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:15,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:15,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-09-30 11:00:15,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 11:00:15,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 11:00:15,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:15,129 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-09-30 11:00:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:15,301 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-09-30 11:00:15,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 11:00:15,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-09-30 11:00:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:15,302 INFO L225 Difference]: With dead ends: 16 [2018-09-30 11:00:15,302 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 11:00:15,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 11:00:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 11:00:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 11:00:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-30 11:00:15,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-09-30 11:00:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:15,308 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-30 11:00:15,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 11:00:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-30 11:00:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 11:00:15,309 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:15,309 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-09-30 11:00:15,309 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:15,309 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:15,309 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-09-30 11:00:15,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:15,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:15,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:15,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:15,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:15,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:15,443 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:15,454 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:15,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:15,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:15,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-09-30 11:00:15,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 11:00:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 11:00:15,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:15,713 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-09-30 11:00:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:15,815 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 11:00:15,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 11:00:15,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-30 11:00:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:15,818 INFO L225 Difference]: With dead ends: 17 [2018-09-30 11:00:15,818 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 11:00:15,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 11:00:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 11:00:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 11:00:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 11:00:15,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-09-30 11:00:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:15,823 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 11:00:15,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 11:00:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 11:00:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 11:00:15,824 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:15,824 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-09-30 11:00:15,824 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:15,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-09-30 11:00:15,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:15,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:15,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:15,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:15,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:15,949 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 [2018-09-30 11:00:15,958 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:15,975 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 11:00:15,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:15,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:16,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:16,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-09-30 11:00:16,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 11:00:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 11:00:16,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:16,072 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-09-30 11:00:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:16,204 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-09-30 11:00:16,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 11:00:16,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-09-30 11:00:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:16,206 INFO L225 Difference]: With dead ends: 18 [2018-09-30 11:00:16,206 INFO L226 Difference]: Without dead ends: 16 [2018-09-30 11:00:16,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-30 11:00:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-30 11:00:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-30 11:00:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-30 11:00:16,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-09-30 11:00:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:16,211 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-30 11:00:16,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 11:00:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-30 11:00:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 11:00:16,211 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:16,212 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-09-30 11:00:16,212 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:16,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-09-30 11:00:16,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:16,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:16,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:16,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:16,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:16,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:16,392 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 [2018-09-30 11:00:16,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:16,415 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 11:00:16,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:16,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:16,509 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:16,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-09-30 11:00:16,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 11:00:16,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 11:00:16,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:16,510 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-09-30 11:00:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:16,625 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-30 11:00:16,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 11:00:16,626 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-09-30 11:00:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:16,627 INFO L225 Difference]: With dead ends: 19 [2018-09-30 11:00:16,627 INFO L226 Difference]: Without dead ends: 17 [2018-09-30 11:00:16,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-30 11:00:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-30 11:00:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-30 11:00:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-30 11:00:16,632 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-09-30 11:00:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:16,632 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-30 11:00:16,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 11:00:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-30 11:00:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-30 11:00:16,633 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:16,633 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-09-30 11:00:16,634 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:16,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-09-30 11:00:16,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:16,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:16,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:16,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:16,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:16,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:16,854 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 [2018-09-30 11:00:16,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:16,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:16,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:16,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-09-30 11:00:16,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 11:00:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 11:00:16,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:16,960 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2018-09-30 11:00:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:17,273 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-09-30 11:00:17,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 11:00:17,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2018-09-30 11:00:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:17,276 INFO L225 Difference]: With dead ends: 20 [2018-09-30 11:00:17,276 INFO L226 Difference]: Without dead ends: 18 [2018-09-30 11:00:17,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-30 11:00:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-30 11:00:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-30 11:00:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-30 11:00:17,281 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-09-30 11:00:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:17,281 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-30 11:00:17,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 11:00:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-30 11:00:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 11:00:17,282 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:17,282 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-09-30 11:00:17,282 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:17,282 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-09-30 11:00:17,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:17,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:17,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:17,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:17,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:17,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:17,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:17,486 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:17,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:17,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:17,574 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:17,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-09-30 11:00:17,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 11:00:17,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 11:00:17,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:17,575 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-09-30 11:00:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:17,722 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 11:00:17,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 11:00:17,724 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-09-30 11:00:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:17,725 INFO L225 Difference]: With dead ends: 21 [2018-09-30 11:00:17,725 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 11:00:17,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 11:00:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 11:00:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 11:00:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 11:00:17,733 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-09-30 11:00:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:17,733 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 11:00:17,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 11:00:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 11:00:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 11:00:17,736 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:17,736 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-09-30 11:00:17,736 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:17,737 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-09-30 11:00:17,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:17,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:17,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:17,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:17,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:17,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:17,934 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:18,062 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-09-30 11:00:18,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:18,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:18,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:18,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-09-30 11:00:18,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 11:00:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 11:00:18,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:18,288 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-09-30 11:00:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:18,454 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-09-30 11:00:18,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 11:00:18,454 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-09-30 11:00:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:18,455 INFO L225 Difference]: With dead ends: 22 [2018-09-30 11:00:18,456 INFO L226 Difference]: Without dead ends: 20 [2018-09-30 11:00:18,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-30 11:00:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-30 11:00:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-30 11:00:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-30 11:00:18,461 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-09-30 11:00:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:18,461 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-30 11:00:18,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 11:00:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-30 11:00:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-30 11:00:18,462 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:18,462 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-09-30 11:00:18,462 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:18,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:18,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-09-30 11:00:18,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:18,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:18,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:18,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:18,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:18,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:18,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:18,648 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:18,688 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:18,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:18,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:19,005 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:19,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2018-09-30 11:00:19,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 11:00:19,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 11:00:19,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:19,006 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-09-30 11:00:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:19,192 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-30 11:00:19,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 11:00:19,193 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-09-30 11:00:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:19,194 INFO L225 Difference]: With dead ends: 23 [2018-09-30 11:00:19,194 INFO L226 Difference]: Without dead ends: 21 [2018-09-30 11:00:19,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-30 11:00:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-30 11:00:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 11:00:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-30 11:00:19,198 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-09-30 11:00:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:19,198 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-30 11:00:19,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 11:00:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-30 11:00:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 11:00:19,199 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:19,199 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-09-30 11:00:19,199 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:19,199 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-09-30 11:00:19,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:19,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:19,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:19,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:19,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:19,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:19,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:19,593 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:19,610 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-09-30 11:00:19,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:19,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:19,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:19,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-09-30 11:00:19,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 11:00:19,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 11:00:19,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:19,734 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 21 states. [2018-09-30 11:00:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:19,852 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-09-30 11:00:19,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 11:00:19,852 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2018-09-30 11:00:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:19,853 INFO L225 Difference]: With dead ends: 24 [2018-09-30 11:00:19,853 INFO L226 Difference]: Without dead ends: 22 [2018-09-30 11:00:19,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-30 11:00:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-30 11:00:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-30 11:00:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-30 11:00:19,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-09-30 11:00:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:19,859 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-30 11:00:19,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 11:00:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-30 11:00:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 11:00:19,860 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:19,860 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-09-30 11:00:19,860 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:19,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-09-30 11:00:19,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:19,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:19,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:19,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:19,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:20,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:20,049 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:20,060 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:20,079 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-09-30 11:00:20,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:20,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:20,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:20,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-09-30 11:00:20,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 11:00:20,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 11:00:20,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:20,513 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-09-30 11:00:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:20,731 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 11:00:20,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 11:00:20,731 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-09-30 11:00:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:20,732 INFO L225 Difference]: With dead ends: 25 [2018-09-30 11:00:20,733 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 11:00:20,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 11:00:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 11:00:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 11:00:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 11:00:20,737 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-09-30 11:00:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:20,738 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 11:00:20,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 11:00:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 11:00:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 11:00:20,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:20,739 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-09-30 11:00:20,739 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:20,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-09-30 11:00:20,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:20,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:20,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:20,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:20,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:20,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:20,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:20,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:20,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:21,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:21,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2018-09-30 11:00:21,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 11:00:21,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 11:00:21,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:21,177 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2018-09-30 11:00:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:21,355 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-09-30 11:00:21,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 11:00:21,356 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2018-09-30 11:00:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:21,356 INFO L225 Difference]: With dead ends: 26 [2018-09-30 11:00:21,357 INFO L226 Difference]: Without dead ends: 24 [2018-09-30 11:00:21,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-30 11:00:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-30 11:00:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 11:00:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-09-30 11:00:21,360 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-09-30 11:00:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:21,360 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-09-30 11:00:21,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 11:00:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-09-30 11:00:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 11:00:21,361 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:21,361 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-09-30 11:00:21,361 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:21,361 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-09-30 11:00:21,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:21,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:21,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:21,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:21,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:21,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:21,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:21,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:21,725 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:21,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:21,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:21,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:21,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2018-09-30 11:00:21,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 11:00:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 11:00:21,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:21,798 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-09-30 11:00:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:22,024 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-30 11:00:22,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 11:00:22,025 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-09-30 11:00:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:22,025 INFO L225 Difference]: With dead ends: 27 [2018-09-30 11:00:22,025 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 11:00:22,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 11:00:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 11:00:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 11:00:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-09-30 11:00:22,028 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-09-30 11:00:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:22,029 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-09-30 11:00:22,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 11:00:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-09-30 11:00:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 11:00:22,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:22,029 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-09-30 11:00:22,030 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:22,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:22,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-09-30 11:00:22,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:22,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:22,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:22,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:22,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:22,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:22,266 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:22,283 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-09-30 11:00:22,283 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:22,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:22,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:22,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2018-09-30 11:00:22,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 11:00:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 11:00:22,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:22,555 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 25 states. [2018-09-30 11:00:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:22,875 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-09-30 11:00:22,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 11:00:22,878 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 24 [2018-09-30 11:00:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:22,878 INFO L225 Difference]: With dead ends: 28 [2018-09-30 11:00:22,878 INFO L226 Difference]: Without dead ends: 26 [2018-09-30 11:00:22,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-30 11:00:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-30 11:00:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-30 11:00:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-30 11:00:22,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-09-30 11:00:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:22,882 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-30 11:00:22,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 11:00:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-30 11:00:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 11:00:22,883 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:22,884 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-09-30 11:00:22,884 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:22,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-09-30 11:00:22,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:22,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:22,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:22,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:23,097 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 [2018-09-30 11:00:23,108 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:23,153 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:23,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:23,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:23,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2018-09-30 11:00:23,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 11:00:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 11:00:23,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:23,301 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-09-30 11:00:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:23,529 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 11:00:23,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 11:00:23,530 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-09-30 11:00:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:23,531 INFO L225 Difference]: With dead ends: 29 [2018-09-30 11:00:23,531 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 11:00:23,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 11:00:23,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 11:00:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 11:00:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 11:00:23,535 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-09-30 11:00:23,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:23,535 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 11:00:23,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 11:00:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 11:00:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 11:00:23,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:23,536 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-09-30 11:00:23,537 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:23,537 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:23,537 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-09-30 11:00:23,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:23,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:23,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:23,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:23,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:23,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:23,788 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:23,814 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-30 11:00:23,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:23,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:23,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-09-30 11:00:23,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 11:00:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 11:00:23,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:23,922 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 27 states. [2018-09-30 11:00:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:24,112 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-09-30 11:00:24,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 11:00:24,113 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 26 [2018-09-30 11:00:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:24,114 INFO L225 Difference]: With dead ends: 30 [2018-09-30 11:00:24,114 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 11:00:24,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 11:00:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-30 11:00:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-30 11:00:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-09-30 11:00:24,120 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-09-30 11:00:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:24,121 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-09-30 11:00:24,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 11:00:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-09-30 11:00:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-30 11:00:24,121 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:24,122 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-09-30 11:00:24,122 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:24,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-09-30 11:00:24,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:24,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:24,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:24,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:24,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:24,442 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 [2018-09-30 11:00:24,458 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:24,543 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 11:00:24,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:24,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:24,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:24,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2018-09-30 11:00:24,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 11:00:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 11:00:24,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:24,684 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-09-30 11:00:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:24,849 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-30 11:00:24,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 11:00:24,849 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-09-30 11:00:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:24,850 INFO L225 Difference]: With dead ends: 31 [2018-09-30 11:00:24,850 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 11:00:24,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 11:00:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 11:00:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 11:00:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-09-30 11:00:24,854 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-09-30 11:00:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:24,854 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-09-30 11:00:24,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 11:00:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-09-30 11:00:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 11:00:24,855 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:24,855 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-09-30 11:00:24,855 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:24,855 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-09-30 11:00:24,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:24,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:24,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:24,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:25,527 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:25,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:25,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:25,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:25,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:25,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2018-09-30 11:00:25,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 11:00:25,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 11:00:25,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:25,667 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 29 states. [2018-09-30 11:00:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:25,900 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-09-30 11:00:25,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 11:00:25,900 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 28 [2018-09-30 11:00:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:25,901 INFO L225 Difference]: With dead ends: 32 [2018-09-30 11:00:25,901 INFO L226 Difference]: Without dead ends: 30 [2018-09-30 11:00:25,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-30 11:00:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-09-30 11:00:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-30 11:00:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-09-30 11:00:25,906 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-09-30 11:00:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:25,907 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-09-30 11:00:25,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 11:00:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-09-30 11:00:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 11:00:25,907 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:25,907 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-09-30 11:00:25,908 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:25,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-09-30 11:00:25,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:25,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:25,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:25,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:26,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:26,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:26,138 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:26,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:26,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:26,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2018-09-30 11:00:26,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 11:00:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 11:00:26,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:26,232 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-09-30 11:00:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:26,421 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 11:00:26,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 11:00:26,421 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-09-30 11:00:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:26,422 INFO L225 Difference]: With dead ends: 33 [2018-09-30 11:00:26,422 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 11:00:26,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 11:00:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 11:00:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 11:00:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 11:00:26,427 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-09-30 11:00:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:26,427 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 11:00:26,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 11:00:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 11:00:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 11:00:26,428 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:26,428 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-09-30 11:00:26,428 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:26,428 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-09-30 11:00:26,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:26,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:26,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:26,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:26,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:26,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:26,660 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-09-30 11:00:26,660 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:26,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:26,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2018-09-30 11:00:26,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 11:00:26,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 11:00:26,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:26,749 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 31 states. [2018-09-30 11:00:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:26,906 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-09-30 11:00:26,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 11:00:26,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 30 [2018-09-30 11:00:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:26,907 INFO L225 Difference]: With dead ends: 34 [2018-09-30 11:00:26,908 INFO L226 Difference]: Without dead ends: 32 [2018-09-30 11:00:26,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-30 11:00:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-30 11:00:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-30 11:00:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-09-30 11:00:26,912 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-09-30 11:00:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:26,913 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-09-30 11:00:26,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 11:00:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-09-30 11:00:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-30 11:00:26,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:26,914 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-09-30 11:00:26,914 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:26,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-09-30 11:00:26,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:26,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:27,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:27,518 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 [2018-09-30 11:00:27,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:27,551 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:27,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:27,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:27,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:27,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2018-09-30 11:00:27,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 11:00:27,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 11:00:27,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:27,767 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-09-30 11:00:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:27,979 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-09-30 11:00:27,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 11:00:27,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-09-30 11:00:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:27,981 INFO L225 Difference]: With dead ends: 35 [2018-09-30 11:00:27,981 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 11:00:27,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 11:00:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-30 11:00:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-30 11:00:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-09-30 11:00:27,985 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-09-30 11:00:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:27,985 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-09-30 11:00:27,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 11:00:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-09-30 11:00:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 11:00:27,986 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:27,986 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-09-30 11:00:27,986 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:27,986 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-09-30 11:00:27,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:27,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:27,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:27,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:27,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:28,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:28,307 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 [2018-09-30 11:00:28,314 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:28,335 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-09-30 11:00:28,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:28,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:28,438 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:28,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2018-09-30 11:00:28,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 11:00:28,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 11:00:28,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:28,439 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2018-09-30 11:00:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:28,759 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-09-30 11:00:28,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 11:00:28,759 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2018-09-30 11:00:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:28,760 INFO L225 Difference]: With dead ends: 36 [2018-09-30 11:00:28,760 INFO L226 Difference]: Without dead ends: 34 [2018-09-30 11:00:28,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-30 11:00:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-30 11:00:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 11:00:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-09-30 11:00:28,763 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-09-30 11:00:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:28,763 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-09-30 11:00:28,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 11:00:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-09-30 11:00:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 11:00:28,763 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:28,764 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-09-30 11:00:28,764 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:28,764 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-09-30 11:00:28,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:28,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:28,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:28,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:29,025 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 [2018-09-30 11:00:29,037 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:29,062 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-09-30 11:00:29,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:29,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:29,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2018-09-30 11:00:29,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 11:00:29,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 11:00:29,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:29,156 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-09-30 11:00:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:29,366 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 11:00:29,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 11:00:29,367 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-09-30 11:00:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:29,368 INFO L225 Difference]: With dead ends: 37 [2018-09-30 11:00:29,368 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 11:00:29,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 11:00:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 11:00:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 11:00:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 11:00:29,371 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-09-30 11:00:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:29,371 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 11:00:29,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 11:00:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 11:00:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 11:00:29,372 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:29,372 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-09-30 11:00:29,372 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:29,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-09-30 11:00:29,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:29,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:29,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:29,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:29,655 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 [2018-09-30 11:00:29,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:29,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:29,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2018-09-30 11:00:29,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 11:00:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 11:00:29,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:29,797 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2018-09-30 11:00:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:30,069 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-09-30 11:00:30,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 11:00:30,070 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2018-09-30 11:00:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:30,070 INFO L225 Difference]: With dead ends: 38 [2018-09-30 11:00:30,070 INFO L226 Difference]: Without dead ends: 36 [2018-09-30 11:00:30,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-30 11:00:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-09-30 11:00:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-30 11:00:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-09-30 11:00:30,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-09-30 11:00:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:30,075 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-09-30 11:00:30,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 11:00:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-09-30 11:00:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-30 11:00:30,075 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:30,075 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-09-30 11:00:30,076 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:30,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-09-30 11:00:30,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:30,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:30,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:30,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:30,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:30,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:30,325 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 [2018-09-30 11:00:30,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:30,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:30,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:30,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:30,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:30,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2018-09-30 11:00:30,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 11:00:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 11:00:30,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:30,450 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-09-30 11:00:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:30,663 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-09-30 11:00:30,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 11:00:30,663 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-09-30 11:00:30,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:30,663 INFO L225 Difference]: With dead ends: 39 [2018-09-30 11:00:30,663 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 11:00:30,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 11:00:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 11:00:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 11:00:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-09-30 11:00:30,666 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-09-30 11:00:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:30,667 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-09-30 11:00:30,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 11:00:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-09-30 11:00:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-30 11:00:30,667 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:30,667 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-09-30 11:00:30,668 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:30,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:30,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-09-30 11:00:30,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:30,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:30,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:30,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:30,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:30,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:30,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:30,860 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:30,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-09-30 11:00:30,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:30,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:31,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:31,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2018-09-30 11:00:31,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 11:00:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 11:00:31,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:31,048 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 37 states. [2018-09-30 11:00:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:31,272 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-09-30 11:00:31,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 11:00:31,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2018-09-30 11:00:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:31,273 INFO L225 Difference]: With dead ends: 40 [2018-09-30 11:00:31,273 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 11:00:31,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 11:00:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-09-30 11:00:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-30 11:00:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-09-30 11:00:31,276 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-09-30 11:00:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:31,276 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-09-30 11:00:31,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 11:00:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-09-30 11:00:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-30 11:00:31,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:31,277 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-09-30 11:00:31,277 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:31,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:31,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-09-30 11:00:31,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:31,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:31,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:31,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:31,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:31,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:31,471 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 [2018-09-30 11:00:31,479 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:31,503 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:31,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:31,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:32,523 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:32,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2018-09-30 11:00:32,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 11:00:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 11:00:32,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:32,524 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-09-30 11:00:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:32,841 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 11:00:32,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 11:00:32,841 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-09-30 11:00:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:32,842 INFO L225 Difference]: With dead ends: 41 [2018-09-30 11:00:32,842 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 11:00:32,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 11:00:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 11:00:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 11:00:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 11:00:32,845 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-09-30 11:00:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:32,846 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 11:00:32,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 11:00:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 11:00:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 11:00:32,846 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:32,847 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-09-30 11:00:32,847 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:32,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:32,847 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-09-30 11:00:32,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:32,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:32,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:32,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:32,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:33,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:33,285 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 [2018-09-30 11:00:33,292 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:33,321 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-30 11:00:33,321 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:33,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:33,438 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:33,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2018-09-30 11:00:33,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 11:00:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 11:00:33,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:33,439 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 39 states. [2018-09-30 11:00:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:33,692 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-09-30 11:00:33,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 11:00:33,693 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2018-09-30 11:00:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:33,693 INFO L225 Difference]: With dead ends: 42 [2018-09-30 11:00:33,693 INFO L226 Difference]: Without dead ends: 40 [2018-09-30 11:00:33,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-30 11:00:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-30 11:00:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-30 11:00:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-09-30 11:00:33,695 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-09-30 11:00:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:33,696 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-09-30 11:00:33,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 11:00:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-09-30 11:00:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-30 11:00:33,696 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:33,696 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-09-30 11:00:33,696 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:33,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:33,697 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-09-30 11:00:33,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:33,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:33,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:33,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:33,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:33,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:33,929 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:33,973 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 11:00:33,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:33,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:34,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:34,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2018-09-30 11:00:34,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 11:00:34,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 11:00:34,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:34,272 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-09-30 11:00:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:34,527 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-09-30 11:00:34,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 11:00:34,528 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-09-30 11:00:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:34,528 INFO L225 Difference]: With dead ends: 43 [2018-09-30 11:00:34,528 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 11:00:34,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 11:00:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 11:00:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 11:00:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-09-30 11:00:34,531 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-09-30 11:00:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:34,531 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-09-30 11:00:34,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 11:00:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-09-30 11:00:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 11:00:34,532 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:34,532 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-09-30 11:00:34,532 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:34,533 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-09-30 11:00:34,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:34,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:34,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:34,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:34,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:34,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:34,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:34,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:34,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2018-09-30 11:00:34,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 11:00:34,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 11:00:34,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:34,949 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 41 states. [2018-09-30 11:00:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:35,221 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-09-30 11:00:35,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 11:00:35,222 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 40 [2018-09-30 11:00:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:35,223 INFO L225 Difference]: With dead ends: 44 [2018-09-30 11:00:35,223 INFO L226 Difference]: Without dead ends: 42 [2018-09-30 11:00:35,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-30 11:00:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-09-30 11:00:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-30 11:00:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-09-30 11:00:35,226 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-09-30 11:00:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:35,227 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-09-30 11:00:35,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 11:00:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-09-30 11:00:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-30 11:00:35,228 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:35,228 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-09-30 11:00:35,228 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:35,228 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:35,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-09-30 11:00:35,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:35,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:35,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:35,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:35,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:35,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:35,978 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 [2018-09-30 11:00:35,997 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:36,023 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:36,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:36,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:36,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:36,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2018-09-30 11:00:36,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 11:00:36,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 11:00:36,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:36,133 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-09-30 11:00:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:36,332 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 11:00:36,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 11:00:36,332 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-09-30 11:00:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:36,333 INFO L225 Difference]: With dead ends: 45 [2018-09-30 11:00:36,333 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 11:00:36,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 11:00:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 11:00:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 11:00:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 11:00:36,337 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-09-30 11:00:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:36,338 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 11:00:36,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 11:00:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 11:00:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 11:00:36,338 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:36,338 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-09-30 11:00:36,339 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:36,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-09-30 11:00:36,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:36,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:36,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:36,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:36,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:36,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:36,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:36,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:36,596 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-09-30 11:00:36,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:36,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:36,724 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:36,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2018-09-30 11:00:36,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 11:00:36,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 11:00:36,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:36,725 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 43 states. [2018-09-30 11:00:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:37,004 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-09-30 11:00:37,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 11:00:37,004 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 42 [2018-09-30 11:00:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:37,005 INFO L225 Difference]: With dead ends: 46 [2018-09-30 11:00:37,005 INFO L226 Difference]: Without dead ends: 44 [2018-09-30 11:00:37,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-30 11:00:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-30 11:00:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 11:00:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-09-30 11:00:37,007 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-09-30 11:00:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:37,007 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-09-30 11:00:37,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 11:00:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-09-30 11:00:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 11:00:37,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:37,008 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-09-30 11:00:37,008 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:37,008 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-09-30 11:00:37,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:37,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:37,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:37,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:37,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:37,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:37,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:37,267 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:37,293 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:37,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:37,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:37,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:37,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2018-09-30 11:00:37,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 11:00:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 11:00:37,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:37,462 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-09-30 11:00:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:37,744 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-09-30 11:00:37,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 11:00:37,744 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-09-30 11:00:37,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:37,745 INFO L225 Difference]: With dead ends: 47 [2018-09-30 11:00:37,745 INFO L226 Difference]: Without dead ends: 45 [2018-09-30 11:00:37,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-30 11:00:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-30 11:00:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-30 11:00:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-09-30 11:00:37,746 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-09-30 11:00:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:37,747 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-09-30 11:00:37,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 11:00:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-09-30 11:00:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 11:00:37,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:37,747 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-09-30 11:00:37,747 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:37,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:37,748 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-09-30 11:00:37,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:37,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:37,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:37,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:37,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:38,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:38,545 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:38,552 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:38,589 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-09-30 11:00:38,589 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:38,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:38,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:38,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2018-09-30 11:00:38,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 11:00:38,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 11:00:38,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:38,719 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 45 states. [2018-09-30 11:00:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:39,068 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-09-30 11:00:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 11:00:39,069 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 44 [2018-09-30 11:00:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:39,069 INFO L225 Difference]: With dead ends: 48 [2018-09-30 11:00:39,069 INFO L226 Difference]: Without dead ends: 46 [2018-09-30 11:00:39,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-30 11:00:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-30 11:00:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-30 11:00:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-09-30 11:00:39,072 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-09-30 11:00:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:39,073 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-09-30 11:00:39,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 11:00:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-09-30 11:00:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-30 11:00:39,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:39,074 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-09-30 11:00:39,074 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:39,074 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:39,074 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-09-30 11:00:39,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:39,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:39,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:39,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:39,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:39,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:39,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:39,700 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:39,733 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-09-30 11:00:39,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:39,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:39,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:39,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2018-09-30 11:00:39,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 11:00:39,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 11:00:39,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:39,874 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-09-30 11:00:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:40,167 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 11:00:40,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 11:00:40,168 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-09-30 11:00:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:40,169 INFO L225 Difference]: With dead ends: 49 [2018-09-30 11:00:40,169 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 11:00:40,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 11:00:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 11:00:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 11:00:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 11:00:40,171 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-09-30 11:00:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:40,171 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 11:00:40,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 11:00:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 11:00:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 11:00:40,172 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:40,172 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-09-30 11:00:40,173 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:40,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-09-30 11:00:40,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:40,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:40,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:40,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:40,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:40,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:40,529 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 [2018-09-30 11:00:40,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:40,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:40,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:40,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2018-09-30 11:00:40,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 11:00:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 11:00:40,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:40,685 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 47 states. [2018-09-30 11:00:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:41,024 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-09-30 11:00:41,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 11:00:41,025 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 46 [2018-09-30 11:00:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:41,025 INFO L225 Difference]: With dead ends: 50 [2018-09-30 11:00:41,026 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 11:00:41,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 11:00:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-30 11:00:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-30 11:00:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-09-30 11:00:41,028 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-09-30 11:00:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:41,028 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-09-30 11:00:41,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 11:00:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-09-30 11:00:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-30 11:00:41,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:41,030 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-09-30 11:00:41,030 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:41,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-09-30 11:00:41,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:41,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:41,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:41,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:41,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:41,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:41,288 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 [2018-09-30 11:00:41,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:41,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:41,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:41,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:41,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:41,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2018-09-30 11:00:41,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 11:00:41,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 11:00:41,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:41,467 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-09-30 11:00:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:41,841 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-30 11:00:41,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 11:00:41,841 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-09-30 11:00:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:41,842 INFO L225 Difference]: With dead ends: 51 [2018-09-30 11:00:41,842 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 11:00:41,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 11:00:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 11:00:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 11:00:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-09-30 11:00:41,845 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-09-30 11:00:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:41,846 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-09-30 11:00:41,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 11:00:41,846 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-09-30 11:00:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 11:00:41,846 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:41,846 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-09-30 11:00:41,847 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:41,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-09-30 11:00:41,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:41,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:41,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:41,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:41,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:42,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:42,154 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 [2018-09-30 11:00:42,162 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:42,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-09-30 11:00:42,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:42,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:42,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:42,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2018-09-30 11:00:42,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 11:00:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 11:00:42,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:42,533 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 49 states. [2018-09-30 11:00:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:42,993 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-09-30 11:00:42,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 11:00:42,993 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 48 [2018-09-30 11:00:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:42,994 INFO L225 Difference]: With dead ends: 52 [2018-09-30 11:00:42,994 INFO L226 Difference]: Without dead ends: 50 [2018-09-30 11:00:42,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-30 11:00:42,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-30 11:00:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-30 11:00:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-09-30 11:00:42,996 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-09-30 11:00:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:42,996 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-09-30 11:00:42,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 11:00:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-09-30 11:00:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-30 11:00:42,996 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:42,997 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-09-30 11:00:42,997 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:42,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-09-30 11:00:42,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:42,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:42,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:42,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:42,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:43,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:43,461 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 [2018-09-30 11:00:43,468 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:43,497 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:43,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:43,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:43,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:43,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2018-09-30 11:00:43,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 11:00:43,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 11:00:43,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:43,641 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-09-30 11:00:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:43,951 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 11:00:43,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 11:00:43,951 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-09-30 11:00:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:43,952 INFO L225 Difference]: With dead ends: 53 [2018-09-30 11:00:43,952 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 11:00:43,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 11:00:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 11:00:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 11:00:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 11:00:43,954 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-09-30 11:00:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:43,954 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 11:00:43,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 11:00:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 11:00:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 11:00:43,955 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:43,955 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-09-30 11:00:43,955 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:43,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-09-30 11:00:43,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:43,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:43,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:43,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:44,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:44,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:44,326 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:44,364 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-30 11:00:44,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:44,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:44,490 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:44,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2018-09-30 11:00:44,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 11:00:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 11:00:44,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:44,491 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 51 states. [2018-09-30 11:00:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:44,752 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-30 11:00:44,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 11:00:44,753 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 50 [2018-09-30 11:00:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:44,754 INFO L225 Difference]: With dead ends: 54 [2018-09-30 11:00:44,754 INFO L226 Difference]: Without dead ends: 52 [2018-09-30 11:00:44,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-30 11:00:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-30 11:00:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-30 11:00:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-09-30 11:00:44,756 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-09-30 11:00:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:44,757 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-09-30 11:00:44,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 11:00:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-09-30 11:00:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-30 11:00:44,757 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:44,757 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-09-30 11:00:44,758 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:44,758 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-09-30 11:00:44,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:44,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:44,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:44,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:44,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:45,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:45,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:45,104 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:45,140 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 11:00:45,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:45,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:45,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:45,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2018-09-30 11:00:45,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 11:00:45,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 11:00:45,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:45,279 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-09-30 11:00:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:45,510 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-30 11:00:45,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 11:00:45,510 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-09-30 11:00:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:45,511 INFO L225 Difference]: With dead ends: 55 [2018-09-30 11:00:45,511 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 11:00:45,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 11:00:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 11:00:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 11:00:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-09-30 11:00:45,515 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-09-30 11:00:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:45,515 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-09-30 11:00:45,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 11:00:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-09-30 11:00:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 11:00:45,515 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:45,516 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-09-30 11:00:45,516 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:45,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-09-30 11:00:45,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:45,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:45,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:45,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:45,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:46,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:46,521 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 [2018-09-30 11:00:46,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:46,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:46,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:46,705 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2018-09-30 11:00:46,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 11:00:46,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 11:00:46,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:46,706 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 53 states. [2018-09-30 11:00:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:46,927 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-09-30 11:00:46,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 11:00:46,927 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 52 [2018-09-30 11:00:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:46,928 INFO L225 Difference]: With dead ends: 56 [2018-09-30 11:00:46,928 INFO L226 Difference]: Without dead ends: 54 [2018-09-30 11:00:46,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-30 11:00:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-30 11:00:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 11:00:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-30 11:00:46,930 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-09-30 11:00:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:46,931 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-30 11:00:46,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 11:00:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-30 11:00:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 11:00:46,931 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:46,931 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-09-30 11:00:46,931 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:46,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-09-30 11:00:46,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:46,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:46,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:46,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:46,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:47,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:47,362 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:47,370 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:47,424 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:47,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:47,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:47,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:47,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2018-09-30 11:00:47,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 11:00:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 11:00:47,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:47,876 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-09-30 11:00:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:48,128 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 11:00:48,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 11:00:48,128 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-09-30 11:00:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:48,129 INFO L225 Difference]: With dead ends: 57 [2018-09-30 11:00:48,129 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 11:00:48,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 11:00:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 11:00:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 11:00:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 11:00:48,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-09-30 11:00:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:48,132 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 11:00:48,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 11:00:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 11:00:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 11:00:48,132 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:48,133 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-09-30 11:00:48,133 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:48,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-09-30 11:00:48,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:48,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:48,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:48,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:48,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:48,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:48,478 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 [2018-09-30 11:00:48,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:48,547 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-09-30 11:00:48,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:48,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:48,719 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:48,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2018-09-30 11:00:48,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 11:00:48,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 11:00:48,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:48,721 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 55 states. [2018-09-30 11:00:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:49,021 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-09-30 11:00:49,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 11:00:49,022 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 54 [2018-09-30 11:00:49,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:49,022 INFO L225 Difference]: With dead ends: 58 [2018-09-30 11:00:49,022 INFO L226 Difference]: Without dead ends: 56 [2018-09-30 11:00:49,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-30 11:00:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-30 11:00:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-30 11:00:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-09-30 11:00:49,026 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-09-30 11:00:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:49,027 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-09-30 11:00:49,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 11:00:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-09-30 11:00:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-30 11:00:49,027 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:49,027 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-09-30 11:00:49,027 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:49,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-09-30 11:00:49,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:49,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:49,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:49,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:49,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:49,427 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:49,428 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 [2018-09-30 11:00:49,436 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:49,470 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:49,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:49,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:49,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:49,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2018-09-30 11:00:49,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 11:00:49,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 11:00:49,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:49,669 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-09-30 11:00:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:50,040 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-09-30 11:00:50,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 11:00:50,041 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-09-30 11:00:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:50,042 INFO L225 Difference]: With dead ends: 59 [2018-09-30 11:00:50,042 INFO L226 Difference]: Without dead ends: 57 [2018-09-30 11:00:50,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-30 11:00:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-30 11:00:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 11:00:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-09-30 11:00:50,044 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-09-30 11:00:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:50,044 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-09-30 11:00:50,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 11:00:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-09-30 11:00:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 11:00:50,045 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:50,045 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-09-30 11:00:50,045 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:50,045 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:50,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-09-30 11:00:50,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:50,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:50,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:50,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:50,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:50,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:50,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:50,368 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:50,415 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-09-30 11:00:50,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:50,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:50,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:50,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2018-09-30 11:00:50,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 11:00:50,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 11:00:50,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:50,611 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 57 states. [2018-09-30 11:00:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:51,008 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-09-30 11:00:51,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 11:00:51,009 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 56 [2018-09-30 11:00:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:51,010 INFO L225 Difference]: With dead ends: 60 [2018-09-30 11:00:51,010 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 11:00:51,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 11:00:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-30 11:00:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-30 11:00:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-09-30 11:00:51,012 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-09-30 11:00:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:51,013 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-09-30 11:00:51,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 11:00:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-09-30 11:00:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-30 11:00:51,013 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:51,014 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-09-30 11:00:51,014 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:51,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-09-30 11:00:51,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:51,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:51,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:51,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:51,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:51,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:51,388 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 [2018-09-30 11:00:51,396 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:51,442 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-09-30 11:00:51,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:51,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:51,699 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:51,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2018-09-30 11:00:51,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 11:00:51,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 11:00:51,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:51,700 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-09-30 11:00:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:51,961 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 11:00:51,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 11:00:51,962 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-09-30 11:00:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:51,962 INFO L225 Difference]: With dead ends: 61 [2018-09-30 11:00:51,963 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 11:00:51,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 11:00:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 11:00:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 11:00:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 11:00:51,965 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-09-30 11:00:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:51,965 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 11:00:51,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 11:00:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 11:00:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 11:00:51,966 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:51,966 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-09-30 11:00:51,966 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:51,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-09-30 11:00:51,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:51,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:51,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:51,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:51,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:52,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:52,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:52,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:52,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:52,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:52,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2018-09-30 11:00:52,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 11:00:52,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 11:00:52,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:52,492 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 59 states. [2018-09-30 11:00:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:53,066 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-09-30 11:00:53,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 11:00:53,066 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 58 [2018-09-30 11:00:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:53,067 INFO L225 Difference]: With dead ends: 62 [2018-09-30 11:00:53,067 INFO L226 Difference]: Without dead ends: 60 [2018-09-30 11:00:53,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-30 11:00:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-30 11:00:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-30 11:00:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-09-30 11:00:53,069 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-09-30 11:00:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:53,069 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-09-30 11:00:53,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 11:00:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-09-30 11:00:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-30 11:00:53,070 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:53,070 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-09-30 11:00:53,070 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:53,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-09-30 11:00:53,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:53,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:53,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:53,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:53,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:53,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:53,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:53,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:53,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:53,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2018-09-30 11:00:53,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 11:00:53,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 11:00:53,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:53,627 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-09-30 11:00:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:53,897 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-30 11:00:53,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 11:00:53,898 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-09-30 11:00:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:53,899 INFO L225 Difference]: With dead ends: 63 [2018-09-30 11:00:53,899 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 11:00:53,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 11:00:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 11:00:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 11:00:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-30 11:00:53,902 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-09-30 11:00:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:53,902 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-30 11:00:53,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 11:00:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-30 11:00:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-30 11:00:53,903 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:53,903 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-09-30 11:00:53,903 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:53,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:53,903 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-09-30 11:00:53,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:53,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:53,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:53,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:54,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:54,326 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 [2018-09-30 11:00:54,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:54,379 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-09-30 11:00:54,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:54,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:54,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:54,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2018-09-30 11:00:54,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 11:00:54,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 11:00:54,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:54,558 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 61 states. [2018-09-30 11:00:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:54,972 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-09-30 11:00:54,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 11:00:54,973 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 60 [2018-09-30 11:00:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:54,974 INFO L225 Difference]: With dead ends: 64 [2018-09-30 11:00:54,974 INFO L226 Difference]: Without dead ends: 62 [2018-09-30 11:00:54,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-30 11:00:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-09-30 11:00:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-30 11:00:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-09-30 11:00:54,977 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-09-30 11:00:54,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:54,978 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-09-30 11:00:54,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 11:00:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-09-30 11:00:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-30 11:00:54,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:54,978 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-09-30 11:00:54,979 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:54,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-09-30 11:00:54,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:54,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:54,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:54,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:54,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:55,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:55,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:00:55,580 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:55,623 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:55,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:55,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:55,805 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:55,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2018-09-30 11:00:55,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 11:00:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 11:00:55,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:55,806 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-09-30 11:00:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:56,186 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 11:00:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 11:00:56,186 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-09-30 11:00:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:56,187 INFO L225 Difference]: With dead ends: 65 [2018-09-30 11:00:56,187 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 11:00:56,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 11:00:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 11:00:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 11:00:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 11:00:56,189 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-09-30 11:00:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:56,190 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 11:00:56,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 11:00:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 11:00:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 11:00:56,190 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:56,190 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-09-30 11:00:56,190 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:56,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-09-30 11:00:56,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:56,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:56,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:56,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:56,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:57,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:57,009 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 [2018-09-30 11:00:57,018 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:57,066 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-30 11:00:57,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:57,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:57,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:57,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2018-09-30 11:00:57,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 11:00:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 11:00:57,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:57,300 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 63 states. [2018-09-30 11:00:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:57,594 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-09-30 11:00:57,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 11:00:57,594 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 62 [2018-09-30 11:00:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:57,595 INFO L225 Difference]: With dead ends: 66 [2018-09-30 11:00:57,595 INFO L226 Difference]: Without dead ends: 64 [2018-09-30 11:00:57,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-30 11:00:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-30 11:00:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 11:00:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-09-30 11:00:57,597 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-09-30 11:00:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:57,597 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-09-30 11:00:57,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 11:00:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-09-30 11:00:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 11:00:57,597 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:57,598 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-09-30 11:00:57,598 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:57,598 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-09-30 11:00:57,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:57,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:57,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:57,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:57,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:58,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:58,419 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 [2018-09-30 11:00:58,428 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:58,478 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 11:00:58,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:58,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:58,646 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:58,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2018-09-30 11:00:58,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 11:00:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 11:00:58,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:58,647 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-09-30 11:00:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:59,098 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-09-30 11:00:59,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 11:00:59,099 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-09-30 11:00:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:59,099 INFO L225 Difference]: With dead ends: 67 [2018-09-30 11:00:59,099 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 11:00:59,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 11:00:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 11:00:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 11:00:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-09-30 11:00:59,102 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-09-30 11:00:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:59,102 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-09-30 11:00:59,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 11:00:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-09-30 11:00:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-30 11:00:59,103 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:59,103 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-09-30 11:00:59,103 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:59,103 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-09-30 11:00:59,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:59,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:59,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:59,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:59,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:59,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:59,457 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 [2018-09-30 11:00:59,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:59,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:59,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:59,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2018-09-30 11:00:59,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 11:00:59,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 11:00:59,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:59,667 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 65 states. [2018-09-30 11:01:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:00,119 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-09-30 11:01:00,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 11:01:00,120 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 64 [2018-09-30 11:01:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:00,120 INFO L225 Difference]: With dead ends: 68 [2018-09-30 11:01:00,120 INFO L226 Difference]: Without dead ends: 66 [2018-09-30 11:01:00,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:00,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-30 11:01:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-09-30 11:01:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-30 11:01:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-09-30 11:01:00,123 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-09-30 11:01:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:00,123 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-09-30 11:01:00,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 11:01:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-09-30 11:01:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-30 11:01:00,124 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:00,124 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-09-30 11:01:00,124 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:00,124 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-09-30 11:01:00,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:00,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:00,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:00,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:00,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:01,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:01,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:01,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:01,644 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:01,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:01,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:01,812 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:01,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2018-09-30 11:01:01,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 11:01:01,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 11:01:01,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:01,814 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-09-30 11:01:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:02,331 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 11:01:02,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 11:01:02,332 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-09-30 11:01:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:02,333 INFO L225 Difference]: With dead ends: 69 [2018-09-30 11:01:02,333 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 11:01:02,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 11:01:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 11:01:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 11:01:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 11:01:02,335 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-09-30 11:01:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:02,335 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 11:01:02,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 11:01:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 11:01:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 11:01:02,335 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:02,336 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-09-30 11:01:02,336 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:02,336 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-09-30 11:01:02,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:02,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:02,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:02,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:02,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:03,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:03,406 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:03,416 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:03,528 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-09-30 11:01:03,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:03,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:03,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:03,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2018-09-30 11:01:03,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 11:01:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 11:01:03,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:03,694 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 67 states. [2018-09-30 11:01:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:04,205 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-09-30 11:01:04,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 11:01:04,205 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 66 [2018-09-30 11:01:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:04,205 INFO L225 Difference]: With dead ends: 70 [2018-09-30 11:01:04,205 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 11:01:04,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 11:01:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-09-30 11:01:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-30 11:01:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-09-30 11:01:04,209 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-09-30 11:01:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:04,209 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-09-30 11:01:04,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 11:01:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-09-30 11:01:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-30 11:01:04,210 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:04,210 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-09-30 11:01:04,210 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:04,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-09-30 11:01:04,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:04,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:04,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:04,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:04,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:04,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:04,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:04,806 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:04,864 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:04,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:04,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:05,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:05,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2018-09-30 11:01:05,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 11:01:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 11:01:05,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:05,060 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-09-30 11:01:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:05,402 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-09-30 11:01:05,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 11:01:05,402 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-09-30 11:01:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:05,403 INFO L225 Difference]: With dead ends: 71 [2018-09-30 11:01:05,403 INFO L226 Difference]: Without dead ends: 69 [2018-09-30 11:01:05,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-30 11:01:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-30 11:01:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 11:01:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-09-30 11:01:05,405 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-09-30 11:01:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:05,405 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-09-30 11:01:05,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 11:01:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-09-30 11:01:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 11:01:05,406 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:05,406 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-09-30 11:01:05,406 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:05,406 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:05,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-09-30 11:01:05,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:05,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:05,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:05,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:05,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:05,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:05,849 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 [2018-09-30 11:01:05,857 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:05,912 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-09-30 11:01:05,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:05,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:06,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:06,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2018-09-30 11:01:06,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 11:01:06,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 11:01:06,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:06,089 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 69 states. [2018-09-30 11:01:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:06,509 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-09-30 11:01:06,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 11:01:06,510 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 68 [2018-09-30 11:01:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:06,511 INFO L225 Difference]: With dead ends: 72 [2018-09-30 11:01:06,511 INFO L226 Difference]: Without dead ends: 70 [2018-09-30 11:01:06,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-30 11:01:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-09-30 11:01:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-30 11:01:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-09-30 11:01:06,514 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-09-30 11:01:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:06,514 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-09-30 11:01:06,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 11:01:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-09-30 11:01:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-30 11:01:06,515 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:06,515 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-09-30 11:01:06,516 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:06,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-09-30 11:01:06,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:06,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:06,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:06,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:06,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:06,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:06,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:06,986 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:07,036 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-09-30 11:01:07,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:07,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:07,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:07,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2018-09-30 11:01:07,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 11:01:07,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 11:01:07,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:07,511 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-09-30 11:01:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:08,114 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 11:01:08,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 11:01:08,114 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-09-30 11:01:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:08,114 INFO L225 Difference]: With dead ends: 73 [2018-09-30 11:01:08,115 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 11:01:08,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 11:01:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 11:01:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 11:01:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 11:01:08,117 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-09-30 11:01:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:08,117 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 11:01:08,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 11:01:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 11:01:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 11:01:08,118 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:08,118 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-09-30 11:01:08,118 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:08,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:08,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-09-30 11:01:08,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:08,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:08,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:08,640 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:08,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:08,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:08,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:08,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:08,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2018-09-30 11:01:08,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 11:01:08,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 11:01:08,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:08,857 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2018-09-30 11:01:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:09,376 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-09-30 11:01:09,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 11:01:09,377 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2018-09-30 11:01:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:09,377 INFO L225 Difference]: With dead ends: 74 [2018-09-30 11:01:09,377 INFO L226 Difference]: Without dead ends: 72 [2018-09-30 11:01:09,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-30 11:01:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-09-30 11:01:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-30 11:01:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-09-30 11:01:09,380 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-09-30 11:01:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:09,381 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-09-30 11:01:09,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 11:01:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-09-30 11:01:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-30 11:01:09,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:09,382 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-09-30 11:01:09,382 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:09,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-09-30 11:01:09,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:09,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:09,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:09,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:09,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:09,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:09,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:09,849 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:09,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:09,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:09,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:10,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:10,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2018-09-30 11:01:10,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 11:01:10,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 11:01:10,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:10,071 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-09-30 11:01:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:10,594 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-09-30 11:01:10,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 11:01:10,595 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-09-30 11:01:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:10,595 INFO L225 Difference]: With dead ends: 75 [2018-09-30 11:01:10,595 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 11:01:10,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 11:01:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 11:01:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 11:01:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-09-30 11:01:10,598 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-09-30 11:01:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:10,598 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-09-30 11:01:10,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 11:01:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-09-30 11:01:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-30 11:01:10,599 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:10,600 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-09-30 11:01:10,600 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:10,600 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-09-30 11:01:10,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:10,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:10,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:10,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:10,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:11,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:11,039 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 [2018-09-30 11:01:11,046 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:11,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-09-30 11:01:11,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:11,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:12,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:12,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2018-09-30 11:01:12,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 11:01:12,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 11:01:12,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:12,646 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 73 states. [2018-09-30 11:01:13,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:13,375 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-09-30 11:01:13,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 11:01:13,375 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 72 [2018-09-30 11:01:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:13,375 INFO L225 Difference]: With dead ends: 76 [2018-09-30 11:01:13,375 INFO L226 Difference]: Without dead ends: 74 [2018-09-30 11:01:13,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-09-30 11:01:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-09-30 11:01:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 11:01:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-09-30 11:01:13,378 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-09-30 11:01:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:13,378 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-09-30 11:01:13,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 11:01:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-09-30 11:01:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 11:01:13,379 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:13,379 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-09-30 11:01:13,379 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:13,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-09-30 11:01:13,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:13,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:13,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:13,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:13,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:13,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:13,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:13,807 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:13,847 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:13,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:13,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:14,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:14,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2018-09-30 11:01:14,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 11:01:14,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 11:01:14,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:14,040 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-09-30 11:01:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:14,632 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 11:01:14,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 11:01:14,632 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-09-30 11:01:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:14,632 INFO L225 Difference]: With dead ends: 77 [2018-09-30 11:01:14,632 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 11:01:14,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 11:01:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 11:01:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 11:01:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 11:01:14,636 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-09-30 11:01:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:14,636 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 11:01:14,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 11:01:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 11:01:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 11:01:14,637 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:14,637 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-09-30 11:01:14,638 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:14,638 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-09-30 11:01:14,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:14,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:14,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:14,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:14,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:15,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:15,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:15,098 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:15,158 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 11:01:15,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:15,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:15,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:15,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2018-09-30 11:01:15,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 11:01:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 11:01:15,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:15,517 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 75 states. [2018-09-30 11:01:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:15,973 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-09-30 11:01:15,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 11:01:15,973 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 74 [2018-09-30 11:01:15,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:15,974 INFO L225 Difference]: With dead ends: 78 [2018-09-30 11:01:15,974 INFO L226 Difference]: Without dead ends: 76 [2018-09-30 11:01:15,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-30 11:01:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-30 11:01:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-30 11:01:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-09-30 11:01:15,977 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-09-30 11:01:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:15,977 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-09-30 11:01:15,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 11:01:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-09-30 11:01:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-30 11:01:15,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:15,978 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-09-30 11:01:15,978 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:15,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-09-30 11:01:15,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:15,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:15,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:15,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:15,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:16,445 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:16,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:16,452 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:16,521 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 11:01:16,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:16,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:16,755 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:16,755 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2018-09-30 11:01:16,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 11:01:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 11:01:16,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:16,756 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-09-30 11:01:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:17,140 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-30 11:01:17,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 11:01:17,140 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-09-30 11:01:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:17,141 INFO L225 Difference]: With dead ends: 79 [2018-09-30 11:01:17,141 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 11:01:17,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 11:01:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 11:01:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 11:01:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-09-30 11:01:17,144 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-09-30 11:01:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:17,145 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-09-30 11:01:17,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 11:01:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-09-30 11:01:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 11:01:17,145 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:17,146 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-09-30 11:01:17,146 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:17,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-09-30 11:01:17,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:17,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:17,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:17,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:17,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:17,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:17,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:17,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:18,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:18,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:18,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2018-09-30 11:01:18,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 11:01:18,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 11:01:18,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:18,220 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 77 states. [2018-09-30 11:01:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:18,954 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-09-30 11:01:18,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 11:01:18,954 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 76 [2018-09-30 11:01:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:18,955 INFO L225 Difference]: With dead ends: 80 [2018-09-30 11:01:18,955 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 11:01:18,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 11:01:18,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-09-30 11:01:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-09-30 11:01:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-09-30 11:01:18,958 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-09-30 11:01:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:18,958 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-09-30 11:01:18,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 11:01:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-09-30 11:01:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-30 11:01:18,958 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:18,958 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-09-30 11:01:18,959 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:18,959 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-09-30 11:01:18,959 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:18,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:18,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:18,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:18,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:19,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:19,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:19,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:19,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:19,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:19,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:19,661 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:19,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2018-09-30 11:01:19,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 11:01:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 11:01:19,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:19,663 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-09-30 11:01:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:20,298 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 11:01:20,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 11:01:20,298 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-09-30 11:01:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:20,299 INFO L225 Difference]: With dead ends: 81 [2018-09-30 11:01:20,299 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 11:01:20,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 11:01:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 11:01:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 11:01:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 11:01:20,301 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-09-30 11:01:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:20,302 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 11:01:20,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 11:01:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 11:01:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 11:01:20,302 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:20,303 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-09-30 11:01:20,303 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:20,303 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-09-30 11:01:20,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:20,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:20,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:20,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:20,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:20,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:20,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:20,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:20,862 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-09-30 11:01:20,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:20,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:21,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:21,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2018-09-30 11:01:21,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 11:01:21,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 11:01:21,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:21,118 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 79 states. [2018-09-30 11:01:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:21,741 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-09-30 11:01:21,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 11:01:21,742 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 78 [2018-09-30 11:01:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:21,742 INFO L225 Difference]: With dead ends: 82 [2018-09-30 11:01:21,742 INFO L226 Difference]: Without dead ends: 80 [2018-09-30 11:01:21,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-30 11:01:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-09-30 11:01:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-30 11:01:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-09-30 11:01:21,745 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-09-30 11:01:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:21,745 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-09-30 11:01:21,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 11:01:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-09-30 11:01:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-09-30 11:01:21,746 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:21,746 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-09-30 11:01:21,746 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:21,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-09-30 11:01:21,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:21,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:21,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:21,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:21,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:22,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:22,186 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 [2018-09-30 11:01:22,193 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:22,238 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:22,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:22,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:22,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:22,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2018-09-30 11:01:22,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 11:01:22,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 11:01:22,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:22,447 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-09-30 11:01:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:24,115 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-09-30 11:01:24,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 11:01:24,124 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-09-30 11:01:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:24,124 INFO L225 Difference]: With dead ends: 83 [2018-09-30 11:01:24,124 INFO L226 Difference]: Without dead ends: 81 [2018-09-30 11:01:24,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-30 11:01:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-30 11:01:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-30 11:01:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-30 11:01:24,127 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-09-30 11:01:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:24,127 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-30 11:01:24,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 11:01:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-30 11:01:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 11:01:24,128 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:24,128 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-09-30 11:01:24,129 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:24,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-09-30 11:01:24,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:24,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:24,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:24,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:24,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:24,599 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:24,599 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 [2018-09-30 11:01:24,607 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:24,674 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-09-30 11:01:24,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:24,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:24,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:24,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2018-09-30 11:01:24,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 11:01:24,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 11:01:24,884 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:24,884 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 81 states. [2018-09-30 11:01:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:25,344 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-09-30 11:01:25,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 11:01:25,345 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 80 [2018-09-30 11:01:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:25,345 INFO L225 Difference]: With dead ends: 84 [2018-09-30 11:01:25,345 INFO L226 Difference]: Without dead ends: 82 [2018-09-30 11:01:25,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-30 11:01:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-30 11:01:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-30 11:01:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-09-30 11:01:25,348 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-09-30 11:01:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:25,348 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-09-30 11:01:25,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 11:01:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-09-30 11:01:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-09-30 11:01:25,348 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:25,348 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-09-30 11:01:25,349 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:25,349 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:25,349 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-09-30 11:01:25,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:25,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:25,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:25,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:25,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:26,429 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:26,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:26,436 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:26,504 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-09-30 11:01:26,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:26,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:26,755 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:26,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2018-09-30 11:01:26,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 11:01:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 11:01:26,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:26,757 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-09-30 11:01:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:27,306 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 11:01:27,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 11:01:27,306 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-09-30 11:01:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:27,307 INFO L225 Difference]: With dead ends: 85 [2018-09-30 11:01:27,307 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 11:01:27,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 11:01:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 11:01:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 11:01:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 11:01:27,310 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-09-30 11:01:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:27,310 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 11:01:27,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 11:01:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 11:01:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 11:01:27,311 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:27,311 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-09-30 11:01:27,311 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:27,311 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-09-30 11:01:27,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:27,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:27,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:27,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:27,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:27,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:27,810 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 [2018-09-30 11:01:27,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:27,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:28,095 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:28,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2018-09-30 11:01:28,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 11:01:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 11:01:28,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:28,096 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 83 states. [2018-09-30 11:01:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:28,977 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-09-30 11:01:28,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 11:01:28,977 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 82 [2018-09-30 11:01:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:28,978 INFO L225 Difference]: With dead ends: 86 [2018-09-30 11:01:28,978 INFO L226 Difference]: Without dead ends: 84 [2018-09-30 11:01:28,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-30 11:01:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-09-30 11:01:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 11:01:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-09-30 11:01:28,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-09-30 11:01:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:28,980 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-09-30 11:01:28,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 11:01:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-09-30 11:01:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 11:01:28,981 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:28,981 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-09-30 11:01:28,981 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:28,981 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:28,981 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-09-30 11:01:28,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:28,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:28,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:28,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:28,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:29,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:29,811 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 [2018-09-30 11:01:29,818 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:29,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:29,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:29,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:30,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:30,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2018-09-30 11:01:30,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 11:01:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 11:01:30,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:30,938 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-09-30 11:01:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:31,469 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-30 11:01:31,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 11:01:31,469 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-09-30 11:01:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:31,469 INFO L225 Difference]: With dead ends: 87 [2018-09-30 11:01:31,470 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 11:01:31,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 11:01:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 11:01:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 11:01:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-09-30 11:01:31,473 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-09-30 11:01:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:31,473 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-09-30 11:01:31,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 11:01:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-09-30 11:01:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 11:01:31,474 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:31,474 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-09-30 11:01:31,474 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:31,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:31,474 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-09-30 11:01:31,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:31,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:31,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:31,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:31,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:32,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:32,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:32,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:32,271 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-09-30 11:01:32,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:32,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:32,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:32,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2018-09-30 11:01:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 11:01:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 11:01:32,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:32,527 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 85 states. [2018-09-30 11:01:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:33,205 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-09-30 11:01:33,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 11:01:33,205 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 84 [2018-09-30 11:01:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:33,206 INFO L225 Difference]: With dead ends: 88 [2018-09-30 11:01:33,206 INFO L226 Difference]: Without dead ends: 86 [2018-09-30 11:01:33,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-30 11:01:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-09-30 11:01:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-30 11:01:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-09-30 11:01:33,209 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-09-30 11:01:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:33,209 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-09-30 11:01:33,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 11:01:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-09-30 11:01:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-09-30 11:01:33,209 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:33,210 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-09-30 11:01:33,210 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:33,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-09-30 11:01:33,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:33,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:33,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:33,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:33,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:33,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:33,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:33,814 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:33,865 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:33,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:33,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:34,176 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:34,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2018-09-30 11:01:34,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 11:01:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 11:01:34,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:34,178 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-09-30 11:01:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:34,766 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 11:01:34,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 11:01:34,766 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-09-30 11:01:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:34,767 INFO L225 Difference]: With dead ends: 89 [2018-09-30 11:01:34,767 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 11:01:34,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 11:01:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 11:01:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 11:01:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 11:01:34,769 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-09-30 11:01:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:34,770 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 11:01:34,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 11:01:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 11:01:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 11:01:34,770 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:34,770 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-09-30 11:01:34,771 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:34,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-09-30 11:01:34,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:34,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:34,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:34,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:34,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:35,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:35,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:35,300 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:35,379 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-30 11:01:35,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:35,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:35,593 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:35,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2018-09-30 11:01:35,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 11:01:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 11:01:35,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:35,595 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 87 states. [2018-09-30 11:01:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:36,420 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-09-30 11:01:36,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 11:01:36,421 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 86 [2018-09-30 11:01:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:36,421 INFO L225 Difference]: With dead ends: 90 [2018-09-30 11:01:36,421 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 11:01:36,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 11:01:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-30 11:01:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-30 11:01:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-09-30 11:01:36,424 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-09-30 11:01:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:36,425 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-09-30 11:01:36,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 11:01:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-09-30 11:01:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-30 11:01:36,425 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:36,426 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-09-30 11:01:36,426 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:36,426 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-09-30 11:01:36,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:36,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:36,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:36,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:36,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:37,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:37,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:37,067 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:37,148 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 11:01:37,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:37,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:37,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:37,376 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2018-09-30 11:01:37,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 11:01:37,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 11:01:37,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:37,378 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-09-30 11:01:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:38,023 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-09-30 11:01:38,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 11:01:38,024 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-09-30 11:01:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:38,024 INFO L225 Difference]: With dead ends: 91 [2018-09-30 11:01:38,024 INFO L226 Difference]: Without dead ends: 89 [2018-09-30 11:01:38,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-30 11:01:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-30 11:01:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 11:01:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-09-30 11:01:38,027 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-09-30 11:01:38,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:38,027 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-09-30 11:01:38,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 11:01:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-09-30 11:01:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 11:01:38,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:38,028 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-09-30 11:01:38,028 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:38,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:38,029 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-09-30 11:01:38,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:38,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:38,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:38,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:38,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:38,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:38,555 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 [2018-09-30 11:01:38,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:38,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:38,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:38,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2018-09-30 11:01:38,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 11:01:38,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 11:01:38,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:38,951 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 89 states. [2018-09-30 11:01:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:39,584 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-09-30 11:01:39,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 11:01:39,584 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 88 [2018-09-30 11:01:39,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:39,585 INFO L225 Difference]: With dead ends: 92 [2018-09-30 11:01:39,585 INFO L226 Difference]: Without dead ends: 90 [2018-09-30 11:01:39,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-09-30 11:01:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-09-30 11:01:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-09-30 11:01:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-09-30 11:01:39,588 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-09-30 11:01:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:39,588 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-09-30 11:01:39,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 11:01:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-09-30 11:01:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-30 11:01:39,589 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:39,589 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-09-30 11:01:39,589 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:39,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-09-30 11:01:39,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:39,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:39,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:39,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:39,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:40,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:40,136 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 [2018-09-30 11:01:40,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:40,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:40,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:40,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:40,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:40,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2018-09-30 11:01:40,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 11:01:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 11:01:40,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:40,415 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-09-30 11:01:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:40,978 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 11:01:40,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 11:01:40,978 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-09-30 11:01:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:40,979 INFO L225 Difference]: With dead ends: 93 [2018-09-30 11:01:40,979 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 11:01:40,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 11:01:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 11:01:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 11:01:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 11:01:40,981 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-09-30 11:01:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:40,981 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 11:01:40,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 11:01:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 11:01:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 11:01:40,982 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:40,982 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-09-30 11:01:40,982 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:40,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-09-30 11:01:40,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:40,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:40,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:41,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:41,532 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 [2018-09-30 11:01:41,541 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:41,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-09-30 11:01:41,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:41,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:41,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:41,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2018-09-30 11:01:41,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 11:01:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 11:01:41,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:41,852 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 91 states. [2018-09-30 11:01:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:42,478 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-09-30 11:01:42,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 11:01:42,478 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 90 [2018-09-30 11:01:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:42,479 INFO L225 Difference]: With dead ends: 94 [2018-09-30 11:01:42,479 INFO L226 Difference]: Without dead ends: 92 [2018-09-30 11:01:42,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-30 11:01:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-30 11:01:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-30 11:01:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-09-30 11:01:42,481 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-09-30 11:01:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:42,481 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-09-30 11:01:42,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 11:01:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-09-30 11:01:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-30 11:01:42,482 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:42,482 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-09-30 11:01:42,482 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:42,482 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-09-30 11:01:42,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:42,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:42,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:42,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:42,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:43,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:43,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:43,065 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:43,121 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:43,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:43,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:43,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:43,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2018-09-30 11:01:43,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 11:01:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 11:01:43,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:43,357 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-09-30 11:01:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:44,004 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-09-30 11:01:44,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 11:01:44,005 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-09-30 11:01:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:44,005 INFO L225 Difference]: With dead ends: 95 [2018-09-30 11:01:44,005 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 11:01:44,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 11:01:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 11:01:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 11:01:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-09-30 11:01:44,008 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-09-30 11:01:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:44,008 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-09-30 11:01:44,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 11:01:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-09-30 11:01:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 11:01:44,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:44,008 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-09-30 11:01:44,008 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:44,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:44,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-09-30 11:01:44,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:44,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:44,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:44,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:44,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:44,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:44,665 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 [2018-09-30 11:01:44,674 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:44,814 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-30 11:01:44,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:44,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:45,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:45,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2018-09-30 11:01:45,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 11:01:45,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 11:01:45,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:45,069 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 93 states. [2018-09-30 11:01:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:45,689 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-09-30 11:01:45,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 11:01:45,689 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 92 [2018-09-30 11:01:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:45,690 INFO L225 Difference]: With dead ends: 96 [2018-09-30 11:01:45,690 INFO L226 Difference]: Without dead ends: 94 [2018-09-30 11:01:45,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-09-30 11:01:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-09-30 11:01:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 11:01:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-09-30 11:01:45,692 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-09-30 11:01:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:45,692 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-09-30 11:01:45,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 11:01:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-09-30 11:01:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 11:01:45,693 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:45,693 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-09-30 11:01:45,693 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:45,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:45,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-09-30 11:01:45,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:45,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:45,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:45,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:45,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:46,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:46,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:46,280 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:46,360 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-09-30 11:01:46,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:46,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:46,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:46,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2018-09-30 11:01:46,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 11:01:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 11:01:46,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:46,596 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-09-30 11:01:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:47,323 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 11:01:47,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 11:01:47,323 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-09-30 11:01:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:47,324 INFO L225 Difference]: With dead ends: 97 [2018-09-30 11:01:47,324 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 11:01:47,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 11:01:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 11:01:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 11:01:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 11:01:47,327 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-09-30 11:01:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:47,327 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 11:01:47,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 11:01:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 11:01:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 11:01:47,328 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:47,328 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-09-30 11:01:47,328 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:47,329 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:47,329 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-09-30 11:01:47,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:47,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:47,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:47,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:47,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:47,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:47,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:47,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:47,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:48,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:48,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2018-09-30 11:01:48,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 11:01:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 11:01:48,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:48,222 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 95 states. [2018-09-30 11:01:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:49,161 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-09-30 11:01:49,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 11:01:49,162 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 94 [2018-09-30 11:01:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:49,162 INFO L225 Difference]: With dead ends: 98 [2018-09-30 11:01:49,162 INFO L226 Difference]: Without dead ends: 96 [2018-09-30 11:01:49,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-09-30 11:01:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-09-30 11:01:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-09-30 11:01:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-09-30 11:01:49,165 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-09-30 11:01:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:49,166 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-09-30 11:01:49,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 11:01:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-09-30 11:01:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-09-30 11:01:49,166 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:49,166 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-09-30 11:01:49,166 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:49,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-09-30 11:01:49,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:49,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:49,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:49,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:49,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:49,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:49,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:49,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:49,934 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:49,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:49,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:50,232 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:50,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2018-09-30 11:01:50,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 11:01:50,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 11:01:50,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:50,234 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-09-30 11:01:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:51,169 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-09-30 11:01:51,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 11:01:51,170 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-09-30 11:01:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:51,170 INFO L225 Difference]: With dead ends: 99 [2018-09-30 11:01:51,170 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 11:01:51,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 11:01:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 11:01:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 11:01:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-09-30 11:01:51,173 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-09-30 11:01:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:51,173 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-09-30 11:01:51,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 11:01:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-09-30 11:01:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-30 11:01:51,173 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:51,174 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-09-30 11:01:51,174 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:51,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-09-30 11:01:51,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:51,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:51,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:51,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:51,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:51,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:51,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:51,896 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:51,983 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-09-30 11:01:51,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:51,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:52,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:52,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2018-09-30 11:01:52,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 11:01:52,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 11:01:52,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:52,255 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 97 states. [2018-09-30 11:01:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:52,944 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-09-30 11:01:52,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 11:01:52,944 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 96 [2018-09-30 11:01:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:52,945 INFO L225 Difference]: With dead ends: 100 [2018-09-30 11:01:52,945 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 11:01:52,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 11:01:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-09-30 11:01:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-09-30 11:01:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-09-30 11:01:52,947 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-09-30 11:01:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:52,947 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-09-30 11:01:52,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 11:01:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-09-30 11:01:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-09-30 11:01:52,948 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:52,948 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-09-30 11:01:52,948 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:52,948 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-09-30 11:01:52,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:52,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:52,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:52,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:52,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:53,577 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:53,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:53,585 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:53,642 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:53,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:53,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:53,885 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:53,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2018-09-30 11:01:53,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 11:01:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 11:01:53,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:53,887 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-09-30 11:01:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:54,910 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 11:01:54,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 11:01:54,910 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-09-30 11:01:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:54,911 INFO L225 Difference]: With dead ends: 101 [2018-09-30 11:01:54,911 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 11:01:54,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 11:01:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 11:01:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 11:01:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 11:01:54,913 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-09-30 11:01:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:54,913 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 11:01:54,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 11:01:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 11:01:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 11:01:54,914 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:54,914 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-09-30 11:01:54,914 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:54,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-09-30 11:01:54,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:54,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:54,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:54,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:54,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:55,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:55,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:55,558 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:55,662 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 11:01:55,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:55,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:55,902 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:55,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2018-09-30 11:01:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 11:01:55,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 11:01:55,904 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:55,904 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 99 states. [2018-09-30 11:01:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:56,663 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-09-30 11:01:56,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 11:01:56,663 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 98 [2018-09-30 11:01:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:56,664 INFO L225 Difference]: With dead ends: 102 [2018-09-30 11:01:56,664 INFO L226 Difference]: Without dead ends: 100 [2018-09-30 11:01:56,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-09-30 11:01:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-09-30 11:01:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-09-30 11:01:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-09-30 11:01:56,666 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-09-30 11:01:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:56,667 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-09-30 11:01:56,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 11:01:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-09-30 11:01:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-09-30 11:01:56,667 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:56,667 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-09-30 11:01:56,667 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:56,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-09-30 11:01:56,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:56,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:56,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:56,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:56,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:57,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:57,279 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 [2018-09-30 11:01:57,287 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:57,376 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 11:01:57,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:57,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:57,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:57,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2018-09-30 11:01:57,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 11:01:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 11:01:57,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:57,617 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-09-30 11:01:58,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:58,381 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-09-30 11:01:58,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 11:01:58,381 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-09-30 11:01:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:58,382 INFO L225 Difference]: With dead ends: 103 [2018-09-30 11:01:58,382 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 11:01:58,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 11:01:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 11:01:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 11:01:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-09-30 11:01:58,385 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-09-30 11:01:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:58,385 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-09-30 11:01:58,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 11:01:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-09-30 11:01:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 11:01:58,386 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:58,386 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-09-30 11:01:58,386 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:58,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-09-30 11:01:58,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:58,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:58,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:58,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:58,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:59,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:59,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:01:59,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:59,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:59,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:59,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2018-09-30 11:01:59,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 11:01:59,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 11:01:59,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:59,449 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 101 states. [2018-09-30 11:02:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:00,508 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-09-30 11:02:00,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 11:02:00,508 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 100 [2018-09-30 11:02:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:00,509 INFO L225 Difference]: With dead ends: 104 [2018-09-30 11:02:00,509 INFO L226 Difference]: Without dead ends: 102 [2018-09-30 11:02:00,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-09-30 11:02:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-09-30 11:02:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-09-30 11:02:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-09-30 11:02:00,512 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-09-30 11:02:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:00,513 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-09-30 11:02:00,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 11:02:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-09-30 11:02:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-30 11:02:00,513 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:00,514 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-09-30 11:02:00,514 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:00,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:00,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-09-30 11:02:00,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:00,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:00,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:00,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:00,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:01,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:01,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:01,180 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:02:01,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:02:01,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:01,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:01,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:01,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2018-09-30 11:02:01,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 11:02:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 11:02:01,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:01,494 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-09-30 11:02:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:02,553 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 11:02:02,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 11:02:02,554 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-09-30 11:02:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:02,554 INFO L225 Difference]: With dead ends: 105 [2018-09-30 11:02:02,554 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 11:02:02,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 11:02:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 11:02:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 11:02:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 11:02:02,557 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-09-30 11:02:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:02,557 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 11:02:02,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 11:02:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 11:02:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 11:02:02,558 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:02,558 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-09-30 11:02:02,558 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:02,558 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-09-30 11:02:02,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:02,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:02,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:02,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:02,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:03,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:03,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:03,246 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:02:03,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-09-30 11:02:03,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:03,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:03,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:03,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2018-09-30 11:02:03,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 11:02:03,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 11:02:03,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:03,598 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 103 states. [2018-09-30 11:02:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:04,703 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-09-30 11:02:04,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 11:02:04,703 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 102 [2018-09-30 11:02:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:04,704 INFO L225 Difference]: With dead ends: 106 [2018-09-30 11:02:04,704 INFO L226 Difference]: Without dead ends: 104 [2018-09-30 11:02:04,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-09-30 11:02:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-09-30 11:02:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 11:02:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-09-30 11:02:04,707 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-09-30 11:02:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:04,707 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-09-30 11:02:04,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 11:02:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-09-30 11:02:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 11:02:04,708 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:04,708 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-09-30 11:02:04,709 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:04,709 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-09-30 11:02:04,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:04,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:04,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:04,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:04,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:05,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:05,402 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 [2018-09-30 11:02:05,410 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:02:05,470 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:02:05,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:05,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:05,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:05,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2018-09-30 11:02:05,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 11:02:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 11:02:05,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:05,752 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-09-30 11:02:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:06,705 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-09-30 11:02:06,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 11:02:06,705 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-09-30 11:02:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:06,706 INFO L225 Difference]: With dead ends: 107 [2018-09-30 11:02:06,706 INFO L226 Difference]: Without dead ends: 105 [2018-09-30 11:02:06,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-30 11:02:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-30 11:02:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-30 11:02:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-09-30 11:02:06,710 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-09-30 11:02:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:06,710 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-09-30 11:02:06,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 11:02:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-09-30 11:02:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 11:02:06,711 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:06,711 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-09-30 11:02:06,711 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:06,711 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-09-30 11:02:06,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:06,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:06,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:06,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:06,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:07,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:07,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:07,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:02:07,549 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-09-30 11:02:07,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:07,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:07,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:07,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2018-09-30 11:02:07,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 11:02:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 11:02:07,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:07,806 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 105 states. [2018-09-30 11:02:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:08,888 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-09-30 11:02:08,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 11:02:08,888 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 104 [2018-09-30 11:02:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:08,889 INFO L225 Difference]: With dead ends: 108 [2018-09-30 11:02:08,889 INFO L226 Difference]: Without dead ends: 106 [2018-09-30 11:02:08,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-30 11:02:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-09-30 11:02:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-09-30 11:02:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-09-30 11:02:08,897 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-09-30 11:02:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:08,898 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-09-30 11:02:08,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 11:02:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-09-30 11:02:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-09-30 11:02:08,898 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:08,899 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-09-30 11:02:08,899 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:08,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-09-30 11:02:08,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:08,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:08,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:08,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:08,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:09,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:09,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:09,767 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:02:09,863 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-09-30 11:02:09,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:09,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:10,270 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:10,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2018-09-30 11:02:10,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 11:02:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 11:02:10,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:10,273 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-09-30 11:02:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:11,391 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 11:02:11,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 11:02:11,392 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-09-30 11:02:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:11,392 INFO L225 Difference]: With dead ends: 109 [2018-09-30 11:02:11,393 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 11:02:11,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 11:02:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 11:02:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 11:02:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 11:02:11,395 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-09-30 11:02:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:11,396 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 11:02:11,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 11:02:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 11:02:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 11:02:11,396 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:11,396 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-09-30 11:02:11,396 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:11,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-09-30 11:02:11,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:11,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:11,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:11,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:11,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:12,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:12,164 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 [2018-09-30 11:02:12,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:12,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:12,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:12,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2018-09-30 11:02:12,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 11:02:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 11:02:12,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:12,509 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 107 states. [2018-09-30 11:02:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:13,666 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-09-30 11:02:13,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 11:02:13,667 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 106 [2018-09-30 11:02:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:13,667 INFO L225 Difference]: With dead ends: 110 [2018-09-30 11:02:13,667 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 11:02:13,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 11:02:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-09-30 11:02:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-09-30 11:02:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-09-30 11:02:13,670 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-09-30 11:02:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:13,670 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-09-30 11:02:13,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 11:02:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-09-30 11:02:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-09-30 11:02:13,671 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:13,671 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-09-30 11:02:13,671 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:13,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-09-30 11:02:13,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:13,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:13,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:13,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:13,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:14,476 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:14,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:14,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:02:14,540 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:02:14,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:14,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:14,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:14,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2018-09-30 11:02:14,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 11:02:14,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 11:02:14,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:14,925 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-09-30 11:02:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:15,794 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-09-30 11:02:15,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 11:02:15,795 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-09-30 11:02:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:15,795 INFO L225 Difference]: With dead ends: 111 [2018-09-30 11:02:15,795 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 11:02:15,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 11:02:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 11:02:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 11:02:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-09-30 11:02:15,797 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-09-30 11:02:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:15,798 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-09-30 11:02:15,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 11:02:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-09-30 11:02:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 11:02:15,798 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:15,798 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-09-30 11:02:15,798 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:15,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-09-30 11:02:15,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:15,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:15,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:15,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:15,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:16,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:16,534 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 [2018-09-30 11:02:16,544 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:02:16,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-09-30 11:02:16,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:16,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:16,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:16,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2018-09-30 11:02:16,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 11:02:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 11:02:16,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:16,925 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 109 states. [2018-09-30 11:02:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:17,857 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-09-30 11:02:17,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 11:02:17,858 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 108 [2018-09-30 11:02:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:17,858 INFO L225 Difference]: With dead ends: 112 [2018-09-30 11:02:17,858 INFO L226 Difference]: Without dead ends: 110 [2018-09-30 11:02:17,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-09-30 11:02:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-09-30 11:02:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-09-30 11:02:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-09-30 11:02:17,862 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-09-30 11:02:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:17,863 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-09-30 11:02:17,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 11:02:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-09-30 11:02:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-09-30 11:02:17,863 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:17,864 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-09-30 11:02:17,864 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:17,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:17,864 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-09-30 11:02:17,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:17,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:17,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:17,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:17,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:18,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:18,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:18,622 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:02:18,691 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:02:18,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:18,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:18,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:18,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2018-09-30 11:02:18,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 11:02:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 11:02:18,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:18,963 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-09-30 11:02:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:20,253 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 11:02:20,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 11:02:20,253 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-09-30 11:02:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:20,254 INFO L225 Difference]: With dead ends: 113 [2018-09-30 11:02:20,254 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 11:02:20,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 11:02:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 11:02:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 11:02:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 11:02:20,257 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-09-30 11:02:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:20,258 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 11:02:20,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 11:02:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 11:02:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 11:02:20,259 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:20,259 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-09-30 11:02:20,259 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:20,259 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:20,259 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-09-30 11:02:20,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:20,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:20,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:20,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:20,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:21,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:21,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:21,034 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:02:21,140 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 11:02:21,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:21,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:21,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:21,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2018-09-30 11:02:21,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 11:02:21,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 11:02:21,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:21,411 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 111 states. [2018-09-30 11:02:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:22,607 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-09-30 11:02:22,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 11:02:22,607 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 110 [2018-09-30 11:02:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:22,608 INFO L225 Difference]: With dead ends: 114 [2018-09-30 11:02:22,608 INFO L226 Difference]: Without dead ends: 112 [2018-09-30 11:02:22,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-30 11:02:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-09-30 11:02:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-09-30 11:02:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-09-30 11:02:22,611 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-09-30 11:02:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:22,611 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-09-30 11:02:22,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 11:02:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-09-30 11:02:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-30 11:02:22,612 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:22,612 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-09-30 11:02:22,612 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:22,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-09-30 11:02:22,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:22,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:22,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:22,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:22,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:23,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:23,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:23,506 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:02:23,607 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 11:02:23,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:23,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:23,880 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:23,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2018-09-30 11:02:23,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 11:02:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 11:02:23,882 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:23,883 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states. [2018-09-30 11:02:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:25,205 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-09-30 11:02:25,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 11:02:25,205 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111 [2018-09-30 11:02:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:25,205 INFO L225 Difference]: With dead ends: 115 [2018-09-30 11:02:25,205 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 11:02:25,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 11:02:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 11:02:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 11:02:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-09-30 11:02:25,208 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-09-30 11:02:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-09-30 11:02:25,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 11:02:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-09-30 11:02:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-30 11:02:25,208 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:25,209 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-09-30 11:02:25,209 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:25,209 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-09-30 11:02:25,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:25,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:25,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:26,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:26,014 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 [2018-09-30 11:02:26,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:26,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:26,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:26,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2018-09-30 11:02:26,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 11:02:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 11:02:26,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:26,358 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 113 states. [2018-09-30 11:02:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:27,499 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-09-30 11:02:27,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 11:02:27,500 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 112 [2018-09-30 11:02:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:27,500 INFO L225 Difference]: With dead ends: 116 [2018-09-30 11:02:27,500 INFO L226 Difference]: Without dead ends: 114 [2018-09-30 11:02:27,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-09-30 11:02:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-09-30 11:02:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 11:02:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-09-30 11:02:27,503 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-09-30 11:02:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:27,504 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-09-30 11:02:27,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 11:02:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-09-30 11:02:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 11:02:27,504 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:27,505 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-09-30 11:02:27,505 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:27,505 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-09-30 11:02:27,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:27,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:27,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:27,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:27,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:28,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:28,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 11:02:28,339 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:02:28,397 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:02:28,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:28,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:28,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:28,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2018-09-30 11:02:28,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 11:02:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 11:02:28,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:28,672 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states. [2018-09-30 11:02:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:29,946 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 11:02:29,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 11:02:29,946 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113 [2018-09-30 11:02:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:29,947 INFO L225 Difference]: With dead ends: 117 [2018-09-30 11:02:29,947 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 11:02:29,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 11:02:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 11:02:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 11:02:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 11:02:29,950 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-09-30 11:02:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:29,950 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 11:02:29,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 11:02:29,950 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 11:02:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 11:02:29,951 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:29,951 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-09-30 11:02:29,951 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:29,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-09-30 11:02:29,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:29,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:29,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:29,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:29,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:30,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:30,830 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 [2018-09-30 11:02:30,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:02:30,965 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-09-30 11:02:30,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:30,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:31,237 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:31,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2018-09-30 11:02:31,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 11:02:31,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 11:02:31,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:31,239 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 115 states. [2018-09-30 11:02:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:32,263 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-09-30 11:02:32,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 11:02:32,263 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 114 [2018-09-30 11:02:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:32,264 INFO L225 Difference]: With dead ends: 118 [2018-09-30 11:02:32,264 INFO L226 Difference]: Without dead ends: 116 [2018-09-30 11:02:32,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-09-30 11:02:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-09-30 11:02:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-09-30 11:02:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-09-30 11:02:32,266 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-09-30 11:02:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:32,267 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-09-30 11:02:32,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 11:02:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-09-30 11:02:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-09-30 11:02:32,267 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:32,267 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-09-30 11:02:32,268 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:32,268 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-09-30 11:02:32,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:32,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:32,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:32,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:32,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:33,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:33,122 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 [2018-09-30 11:02:33,132 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:02:33,200 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:02:33,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:33,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:33,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:33,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2018-09-30 11:02:33,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 11:02:33,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 11:02:33,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:33,508 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states. [2018-09-30 11:02:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:34,883 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-09-30 11:02:34,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 11:02:34,884 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115 [2018-09-30 11:02:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:34,884 INFO L225 Difference]: With dead ends: 119 [2018-09-30 11:02:34,884 INFO L226 Difference]: Without dead ends: 117 [2018-09-30 11:02:34,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:34,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-30 11:02:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-30 11:02:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 11:02:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-09-30 11:02:34,887 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-09-30 11:02:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:34,888 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-09-30 11:02:34,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 11:02:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-09-30 11:02:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 11:02:34,888 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:34,888 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-09-30 11:02:34,889 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:34,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-09-30 11:02:34,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:34,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:34,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:34,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:34,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:35,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:35,808 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 [2018-09-30 11:02:35,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:02:35,929 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-09-30 11:02:35,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:35,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:36,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:36,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2018-09-30 11:02:36,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 11:02:36,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 11:02:36,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:36,231 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 117 states. [2018-09-30 11:02:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:37,323 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-09-30 11:02:37,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 11:02:37,323 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 116 [2018-09-30 11:02:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:37,324 INFO L225 Difference]: With dead ends: 120 [2018-09-30 11:02:37,324 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 11:02:37,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 11:02:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-09-30 11:02:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-09-30 11:02:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-09-30 11:02:37,326 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-09-30 11:02:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:37,326 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-09-30 11:02:37,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 11:02:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-09-30 11:02:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-30 11:02:37,327 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:37,327 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-09-30 11:02:37,327 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:37,327 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-09-30 11:02:37,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:37,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:37,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:37,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:37,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:38,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:38,178 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 [2018-09-30 11:02:38,185 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:02:38,297 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-09-30 11:02:38,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:38,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:38,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:38,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 117 [2018-09-30 11:02:38,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 11:02:38,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 11:02:38,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:38,589 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states. [2018-09-30 11:02:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:39,887 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 11:02:39,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 11:02:39,887 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117 [2018-09-30 11:02:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:39,887 INFO L225 Difference]: With dead ends: 121 [2018-09-30 11:02:39,887 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 11:02:39,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 11:02:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 11:02:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 11:02:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 11:02:39,892 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-09-30 11:02:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:39,893 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 11:02:39,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 11:02:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 11:02:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 11:02:39,893 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:39,894 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-09-30 11:02:39,894 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:39,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:39,894 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-09-30 11:02:39,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:39,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:39,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:39,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:39,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:40,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:40,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:40,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:40,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:41,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:41,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 118 [2018-09-30 11:02:41,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 11:02:41,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 11:02:41,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:41,270 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 119 states. [2018-09-30 11:02:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:42,366 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-09-30 11:02:42,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 11:02:42,366 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 118 [2018-09-30 11:02:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:42,367 INFO L225 Difference]: With dead ends: 122 [2018-09-30 11:02:42,367 INFO L226 Difference]: Without dead ends: 120 [2018-09-30 11:02:42,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-09-30 11:02:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-09-30 11:02:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-09-30 11:02:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-09-30 11:02:42,369 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-09-30 11:02:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:42,369 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-09-30 11:02:42,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 11:02:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-09-30 11:02:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-30 11:02:42,370 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:42,370 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-09-30 11:02:42,370 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:42,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:42,370 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-09-30 11:02:42,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:42,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:42,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:42,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:42,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:43,236 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:43,236 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:43,244 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:02:43,309 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:02:43,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:43,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:43,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:43,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 119 [2018-09-30 11:02:43,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 11:02:43,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 11:02:43,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:43,610 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states. [2018-09-30 11:02:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:44,810 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-09-30 11:02:44,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 11:02:44,811 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119 [2018-09-30 11:02:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:44,811 INFO L225 Difference]: With dead ends: 123 [2018-09-30 11:02:44,811 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 11:02:44,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 11:02:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 11:02:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 11:02:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-09-30 11:02:44,814 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-09-30 11:02:44,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:44,814 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-09-30 11:02:44,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 11:02:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-09-30 11:02:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-30 11:02:44,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:44,815 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-09-30 11:02:44,815 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:44,815 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-09-30 11:02:44,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:44,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:44,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:44,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:44,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:45,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:45,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:45,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:02:45,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-09-30 11:02:45,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:45,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:46,235 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:46,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 120 [2018-09-30 11:02:46,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 11:02:46,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 11:02:46,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:46,237 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 121 states. [2018-09-30 11:02:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:47,475 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-09-30 11:02:47,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 11:02:47,476 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 120 [2018-09-30 11:02:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:47,476 INFO L225 Difference]: With dead ends: 124 [2018-09-30 11:02:47,476 INFO L226 Difference]: Without dead ends: 122 [2018-09-30 11:02:47,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-30 11:02:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-09-30 11:02:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-09-30 11:02:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-09-30 11:02:47,479 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-09-30 11:02:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:47,479 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-09-30 11:02:47,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 11:02:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-09-30 11:02:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-30 11:02:47,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:47,480 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-09-30 11:02:47,480 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:47,480 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-09-30 11:02:47,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:47,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:47,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:47,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:47,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:48,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:48,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:48,401 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:02:48,476 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:02:48,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:48,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:48,778 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:48,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 121 [2018-09-30 11:02:48,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 11:02:48,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 11:02:48,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:48,780 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states. [2018-09-30 11:02:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:49,987 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 11:02:49,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 11:02:49,988 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121 [2018-09-30 11:02:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:49,988 INFO L225 Difference]: With dead ends: 125 [2018-09-30 11:02:49,988 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 11:02:49,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 11:02:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 11:02:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 11:02:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 11:02:49,992 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-09-30 11:02:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:49,992 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 11:02:49,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 11:02:49,992 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 11:02:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 11:02:49,993 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:49,993 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-09-30 11:02:49,993 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:49,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-09-30 11:02:49,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:49,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:49,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:49,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:49,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:50,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:50,987 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:50,999 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:02:51,125 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-30 11:02:51,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:51,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:51,423 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:51,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 122 [2018-09-30 11:02:51,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 11:02:51,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 11:02:51,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:51,425 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 123 states. [2018-09-30 11:02:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:52,703 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-09-30 11:02:52,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 11:02:52,703 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 122 [2018-09-30 11:02:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:52,704 INFO L225 Difference]: With dead ends: 126 [2018-09-30 11:02:52,704 INFO L226 Difference]: Without dead ends: 124 [2018-09-30 11:02:52,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-09-30 11:02:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-09-30 11:02:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 11:02:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-09-30 11:02:52,708 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-09-30 11:02:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:52,708 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-09-30 11:02:52,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 11:02:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-09-30 11:02:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 11:02:52,709 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:52,710 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-09-30 11:02:52,710 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:52,710 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-09-30 11:02:52,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:52,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:52,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:52,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:52,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:53,742 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:53,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:53,760 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:02:53,879 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 11:02:53,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:53,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:54,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:54,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 123 [2018-09-30 11:02:54,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 11:02:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 11:02:54,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:54,186 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states. [2018-09-30 11:02:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:55,681 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-09-30 11:02:55,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 11:02:55,681 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123 [2018-09-30 11:02:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:55,681 INFO L225 Difference]: With dead ends: 127 [2018-09-30 11:02:55,681 INFO L226 Difference]: Without dead ends: 125 [2018-09-30 11:02:55,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:55,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-30 11:02:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-30 11:02:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 11:02:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-09-30 11:02:55,684 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-09-30 11:02:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:55,684 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-09-30 11:02:55,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 11:02:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-09-30 11:02:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 11:02:55,685 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:55,685 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-09-30 11:02:55,685 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:55,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-09-30 11:02:55,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:55,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:55,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:55,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:02:55,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:56,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:56,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:56,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:56,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:57,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:57,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 124 [2018-09-30 11:02:57,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 11:02:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 11:02:57,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:57,045 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 125 states. [2018-09-30 11:02:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:58,326 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-09-30 11:02:58,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 11:02:58,326 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 124 [2018-09-30 11:02:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:58,326 INFO L225 Difference]: With dead ends: 128 [2018-09-30 11:02:58,326 INFO L226 Difference]: Without dead ends: 126 [2018-09-30 11:02:58,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-30 11:02:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-09-30 11:02:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-09-30 11:02:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-09-30 11:02:58,329 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-09-30 11:02:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:58,329 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-09-30 11:02:58,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 11:02:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-09-30 11:02:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-30 11:02:58,329 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:58,330 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-09-30 11:02:58,330 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:58,330 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:58,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-09-30 11:02:58,330 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:58,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:58,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:58,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:58,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:02:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:59,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:02:59,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:02:59,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:02:59,394 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:02:59,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:02:59,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:59,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:59,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 125 [2018-09-30 11:02:59,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 11:02:59,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 11:02:59,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:59,706 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states. [2018-09-30 11:03:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:00,874 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 11:03:00,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 11:03:00,874 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125 [2018-09-30 11:03:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:00,875 INFO L225 Difference]: With dead ends: 129 [2018-09-30 11:03:00,875 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 11:03:00,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 11:03:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 11:03:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 11:03:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 11:03:00,878 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-09-30 11:03:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:00,878 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 11:03:00,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 11:03:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 11:03:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 11:03:00,879 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:00,879 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-09-30 11:03:00,879 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:00,879 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-09-30 11:03:00,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:00,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:00,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:00,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:00,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:01,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:01,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:01,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:03:02,024 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-09-30 11:03:02,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:02,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:02,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:02,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 126 [2018-09-30 11:03:02,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-30 11:03:02,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-30 11:03:02,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:02,337 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 127 states. [2018-09-30 11:03:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:03,630 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-09-30 11:03:03,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-30 11:03:03,630 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 126 [2018-09-30 11:03:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:03,630 INFO L225 Difference]: With dead ends: 130 [2018-09-30 11:03:03,630 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 11:03:03,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 11:03:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-30 11:03:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-30 11:03:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-09-30 11:03:03,633 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-09-30 11:03:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:03,633 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-09-30 11:03:03,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-30 11:03:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-09-30 11:03:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-30 11:03:03,633 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:03,634 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-09-30 11:03:03,634 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:03,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:03,634 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-09-30 11:03:03,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:03,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:03,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:03,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:03,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:04,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:04,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:04,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:03:04,708 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:03:04,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:04,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:05,051 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:05,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 127 [2018-09-30 11:03:05,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 11:03:05,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 11:03:05,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:05,053 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states. [2018-09-30 11:03:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:06,516 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-09-30 11:03:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 11:03:06,516 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127 [2018-09-30 11:03:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:06,517 INFO L225 Difference]: With dead ends: 131 [2018-09-30 11:03:06,517 INFO L226 Difference]: Without dead ends: 129 [2018-09-30 11:03:06,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-30 11:03:06,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-30 11:03:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 11:03:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-09-30 11:03:06,520 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-09-30 11:03:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:06,520 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-09-30 11:03:06,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 11:03:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-09-30 11:03:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 11:03:06,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:06,521 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-09-30 11:03:06,521 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:06,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-09-30 11:03:06,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:06,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:06,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:06,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:06,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:07,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:07,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:07,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:03:07,692 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-09-30 11:03:07,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:07,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:08,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:08,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 128 [2018-09-30 11:03:08,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-30 11:03:08,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-30 11:03:08,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:08,002 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 129 states. [2018-09-30 11:03:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:09,591 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-09-30 11:03:09,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 11:03:09,592 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 128 [2018-09-30 11:03:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:09,592 INFO L225 Difference]: With dead ends: 132 [2018-09-30 11:03:09,592 INFO L226 Difference]: Without dead ends: 130 [2018-09-30 11:03:09,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-30 11:03:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-09-30 11:03:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-09-30 11:03:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-09-30 11:03:09,596 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-09-30 11:03:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:09,596 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-09-30 11:03:09,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-30 11:03:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-09-30 11:03:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-30 11:03:09,597 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:09,597 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-09-30 11:03:09,597 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:09,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-09-30 11:03:09,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:09,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:09,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:09,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:09,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:10,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:10,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:10,678 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:03:10,806 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-09-30 11:03:10,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:10,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:11,147 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:11,147 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 129 [2018-09-30 11:03:11,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 11:03:11,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 11:03:11,149 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:11,150 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states. [2018-09-30 11:03:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:12,719 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 11:03:12,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 11:03:12,719 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129 [2018-09-30 11:03:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:12,720 INFO L225 Difference]: With dead ends: 133 [2018-09-30 11:03:12,720 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 11:03:12,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 11:03:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 11:03:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 11:03:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 11:03:12,723 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-09-30 11:03:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:12,723 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 11:03:12,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-30 11:03:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 11:03:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 11:03:12,724 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:12,724 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-09-30 11:03:12,724 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:12,724 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-09-30 11:03:12,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:12,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:12,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:13,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:13,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:13,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:13,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:14,193 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:14,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 130 [2018-09-30 11:03:14,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-30 11:03:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-30 11:03:14,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:14,195 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 131 states. [2018-09-30 11:03:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:15,831 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-09-30 11:03:15,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-30 11:03:15,832 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 130 [2018-09-30 11:03:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:15,833 INFO L225 Difference]: With dead ends: 134 [2018-09-30 11:03:15,833 INFO L226 Difference]: Without dead ends: 132 [2018-09-30 11:03:15,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-09-30 11:03:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-09-30 11:03:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-09-30 11:03:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-09-30 11:03:15,836 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-09-30 11:03:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:15,836 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-09-30 11:03:15,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-30 11:03:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-09-30 11:03:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-30 11:03:15,837 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:15,837 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-09-30 11:03:15,838 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:15,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-09-30 11:03:15,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:15,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:15,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:15,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:15,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:16,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:16,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:16,959 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:03:17,030 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:03:17,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:17,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:17,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:17,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 131 [2018-09-30 11:03:17,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 11:03:17,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 11:03:17,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:17,352 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states. [2018-09-30 11:03:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:18,833 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-09-30 11:03:18,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 11:03:18,833 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131 [2018-09-30 11:03:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:18,834 INFO L225 Difference]: With dead ends: 135 [2018-09-30 11:03:18,834 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 11:03:18,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 11:03:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 11:03:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 11:03:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-09-30 11:03:18,837 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-09-30 11:03:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:18,838 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-09-30 11:03:18,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 11:03:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-09-30 11:03:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-30 11:03:18,838 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:18,839 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-09-30 11:03:18,839 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:18,839 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-09-30 11:03:18,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:18,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:18,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:18,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:18,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:19,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:19,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:19,967 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:03:20,111 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-09-30 11:03:20,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:20,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:20,436 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:20,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 132 [2018-09-30 11:03:20,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-09-30 11:03:20,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-09-30 11:03:20,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:20,438 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 133 states. [2018-09-30 11:03:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:21,812 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-09-30 11:03:21,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-09-30 11:03:21,812 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 132 [2018-09-30 11:03:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:21,813 INFO L225 Difference]: With dead ends: 136 [2018-09-30 11:03:21,813 INFO L226 Difference]: Without dead ends: 134 [2018-09-30 11:03:21,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-09-30 11:03:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-09-30 11:03:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 11:03:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-09-30 11:03:21,815 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-09-30 11:03:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:21,815 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-09-30 11:03:21,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-09-30 11:03:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-09-30 11:03:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 11:03:21,816 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:21,816 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-09-30 11:03:21,816 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:21,816 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-09-30 11:03:21,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:21,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:21,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:21,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:21,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:22,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:22,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:22,895 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:03:22,981 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:03:22,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:22,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:23,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:23,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 133 [2018-09-30 11:03:23,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-09-30 11:03:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-09-30 11:03:23,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:23,314 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states. [2018-09-30 11:03:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:24,773 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 11:03:24,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-30 11:03:24,773 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133 [2018-09-30 11:03:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:24,773 INFO L225 Difference]: With dead ends: 137 [2018-09-30 11:03:24,773 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 11:03:24,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 11:03:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 11:03:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 11:03:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 11:03:24,776 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-09-30 11:03:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:24,776 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 11:03:24,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-09-30 11:03:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 11:03:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 11:03:24,776 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:24,776 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-09-30 11:03:24,777 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:24,777 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:24,777 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-09-30 11:03:24,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:24,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:24,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:24,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:24,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:25,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:25,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:25,878 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:03:26,024 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-30 11:03:26,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:26,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:26,395 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:26,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 134 [2018-09-30 11:03:26,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-09-30 11:03:26,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-09-30 11:03:26,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:26,398 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 135 states. [2018-09-30 11:03:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:28,150 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-09-30 11:03:28,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-30 11:03:28,150 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 134 [2018-09-30 11:03:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:28,150 INFO L225 Difference]: With dead ends: 138 [2018-09-30 11:03:28,150 INFO L226 Difference]: Without dead ends: 136 [2018-09-30 11:03:28,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-09-30 11:03:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-09-30 11:03:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-30 11:03:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-09-30 11:03:28,153 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-09-30 11:03:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:28,153 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-09-30 11:03:28,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-09-30 11:03:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-09-30 11:03:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-30 11:03:28,153 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:28,153 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-09-30 11:03:28,154 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:28,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:28,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-09-30 11:03:28,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:28,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:28,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:28,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:28,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:29,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:29,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:29,258 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:03:29,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 11:03:29,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:29,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:29,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:29,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 135 [2018-09-30 11:03:29,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 11:03:29,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 11:03:29,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:29,745 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states. [2018-09-30 11:03:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:31,448 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-09-30 11:03:31,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-09-30 11:03:31,449 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135 [2018-09-30 11:03:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:31,449 INFO L225 Difference]: With dead ends: 139 [2018-09-30 11:03:31,449 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 11:03:31,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 11:03:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 11:03:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 11:03:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-09-30 11:03:31,452 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-09-30 11:03:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:31,452 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-09-30 11:03:31,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 11:03:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-09-30 11:03:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-30 11:03:31,452 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:31,452 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-09-30 11:03:31,453 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:31,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-09-30 11:03:31,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:31,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:31,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:31,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:31,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:32,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:32,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:32,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:32,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:33,037 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:33,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 136 [2018-09-30 11:03:33,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-09-30 11:03:33,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-09-30 11:03:33,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:33,039 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 137 states. [2018-09-30 11:03:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:34,923 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-09-30 11:03:34,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-30 11:03:34,924 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 136 [2018-09-30 11:03:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:34,924 INFO L225 Difference]: With dead ends: 140 [2018-09-30 11:03:34,924 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 11:03:34,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 11:03:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-09-30 11:03:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-09-30 11:03:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-09-30 11:03:34,927 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-09-30 11:03:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:34,927 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-09-30 11:03:34,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-09-30 11:03:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-09-30 11:03:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-30 11:03:34,927 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:34,928 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-09-30 11:03:34,928 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:34,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-09-30 11:03:34,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:34,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:34,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:34,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:34,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:36,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:36,052 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:36,058 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:03:36,133 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:03:36,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:36,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:36,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:36,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 137 [2018-09-30 11:03:36,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-09-30 11:03:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-09-30 11:03:36,478 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:36,478 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states. [2018-09-30 11:03:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:38,088 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 11:03:38,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-30 11:03:38,089 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137 [2018-09-30 11:03:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:38,089 INFO L225 Difference]: With dead ends: 141 [2018-09-30 11:03:38,089 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 11:03:38,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 11:03:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 11:03:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 11:03:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 11:03:38,092 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-09-30 11:03:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:38,092 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 11:03:38,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-09-30 11:03:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 11:03:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 11:03:38,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:38,093 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-09-30 11:03:38,093 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:38,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-09-30 11:03:38,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:38,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:38,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:39,248 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:39,248 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:39,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:03:39,409 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-09-30 11:03:39,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:39,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:39,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:39,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 138 [2018-09-30 11:03:39,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-09-30 11:03:39,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-09-30 11:03:39,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:39,759 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 139 states. [2018-09-30 11:03:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:41,633 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-09-30 11:03:41,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-09-30 11:03:41,633 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 138 [2018-09-30 11:03:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:41,634 INFO L225 Difference]: With dead ends: 142 [2018-09-30 11:03:41,634 INFO L226 Difference]: Without dead ends: 140 [2018-09-30 11:03:41,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-30 11:03:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-30 11:03:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-30 11:03:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-09-30 11:03:41,637 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-09-30 11:03:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:41,637 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-09-30 11:03:41,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-09-30 11:03:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-09-30 11:03:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-30 11:03:41,639 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:41,639 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-09-30 11:03:41,639 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:41,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-09-30 11:03:41,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:41,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:41,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:41,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:41,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:42,865 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:42,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:42,873 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:03:42,962 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:03:42,962 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:42,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:43,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:43,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 139 [2018-09-30 11:03:43,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 11:03:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 11:03:43,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:43,310 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states. [2018-09-30 11:03:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:45,052 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-09-30 11:03:45,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-30 11:03:45,052 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139 [2018-09-30 11:03:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:45,052 INFO L225 Difference]: With dead ends: 143 [2018-09-30 11:03:45,052 INFO L226 Difference]: Without dead ends: 141 [2018-09-30 11:03:45,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-30 11:03:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-30 11:03:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-30 11:03:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-09-30 11:03:45,056 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-09-30 11:03:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:45,056 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-09-30 11:03:45,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 11:03:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-09-30 11:03:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 11:03:45,057 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:45,057 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-09-30 11:03:45,057 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:45,058 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-09-30 11:03:45,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:45,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:45,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:45,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:45,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:46,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:46,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:46,222 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:03:46,380 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-09-30 11:03:46,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:46,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:46,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:46,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 140 [2018-09-30 11:03:46,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-09-30 11:03:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-09-30 11:03:46,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:46,756 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 141 states. [2018-09-30 11:03:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:48,632 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-09-30 11:03:48,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-09-30 11:03:48,633 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 140 [2018-09-30 11:03:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:48,633 INFO L225 Difference]: With dead ends: 144 [2018-09-30 11:03:48,633 INFO L226 Difference]: Without dead ends: 142 [2018-09-30 11:03:48,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-30 11:03:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-30 11:03:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-30 11:03:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-09-30 11:03:48,636 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-09-30 11:03:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:48,636 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-09-30 11:03:48,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-09-30 11:03:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-09-30 11:03:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-30 11:03:48,636 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:48,636 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-09-30 11:03:48,637 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:48,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:48,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-09-30 11:03:48,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:48,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:48,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:49,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:49,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:49,850 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:03:49,998 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-09-30 11:03:49,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:50,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:50,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:50,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 141 [2018-09-30 11:03:50,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-09-30 11:03:50,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-09-30 11:03:50,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:50,348 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states. [2018-09-30 11:03:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:52,275 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 11:03:52,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-09-30 11:03:52,275 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141 [2018-09-30 11:03:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:52,276 INFO L225 Difference]: With dead ends: 145 [2018-09-30 11:03:52,276 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 11:03:52,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 11:03:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 11:03:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 11:03:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 11:03:52,278 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-09-30 11:03:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:52,279 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 11:03:52,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-09-30 11:03:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 11:03:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 11:03:52,280 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:52,280 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-09-30 11:03:52,280 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:52,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:52,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-09-30 11:03:52,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:52,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:52,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:53,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:53,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:53,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:53,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:53,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:53,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 142 [2018-09-30 11:03:53,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-09-30 11:03:53,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-09-30 11:03:53,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:53,949 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 143 states. [2018-09-30 11:03:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:55,848 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-09-30 11:03:55,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-09-30 11:03:55,849 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 142 [2018-09-30 11:03:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:55,849 INFO L225 Difference]: With dead ends: 146 [2018-09-30 11:03:55,849 INFO L226 Difference]: Without dead ends: 144 [2018-09-30 11:03:55,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-09-30 11:03:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-09-30 11:03:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 11:03:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-09-30 11:03:55,852 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-09-30 11:03:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:55,852 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-09-30 11:03:55,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-09-30 11:03:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-09-30 11:03:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 11:03:55,852 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:55,852 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-09-30 11:03:55,853 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:55,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-09-30 11:03:55,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:55,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:55,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:55,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:03:55,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:03:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:57,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:03:57,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:03:57,110 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:03:57,191 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:03:57,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:03:57,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:03:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:03:57,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:03:57,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 143 [2018-09-30 11:03:57,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 11:03:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 11:03:57,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:03:57,559 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states. [2018-09-30 11:03:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:03:59,614 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-09-30 11:03:59,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-09-30 11:03:59,614 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143 [2018-09-30 11:03:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:03:59,615 INFO L225 Difference]: With dead ends: 147 [2018-09-30 11:03:59,615 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 11:03:59,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:03:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 11:03:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 11:03:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 11:03:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-09-30 11:03:59,617 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-09-30 11:03:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:03:59,618 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-09-30 11:03:59,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 11:03:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-09-30 11:03:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-30 11:03:59,618 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:03:59,618 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-09-30 11:03:59,618 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:03:59,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:03:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-09-30 11:03:59,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:03:59,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:03:59,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:59,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:03:59,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:03:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:00,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:04:00,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:04:00,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:04:01,080 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-09-30 11:04:01,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:04:01,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:04:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:01,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:04:01,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 144 [2018-09-30 11:04:01,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-09-30 11:04:01,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-09-30 11:04:01,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:04:01,444 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 145 states. [2018-09-30 11:04:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:04:03,504 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-09-30 11:04:03,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-09-30 11:04:03,505 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 144 [2018-09-30 11:04:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:04:03,505 INFO L225 Difference]: With dead ends: 148 [2018-09-30 11:04:03,505 INFO L226 Difference]: Without dead ends: 146 [2018-09-30 11:04:03,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:04:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-09-30 11:04:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-09-30 11:04:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-09-30 11:04:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-09-30 11:04:03,508 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-09-30 11:04:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:04:03,508 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-09-30 11:04:03,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-09-30 11:04:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-09-30 11:04:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-30 11:04:03,509 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:04:03,509 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-09-30 11:04:03,509 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:04:03,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:04:03,509 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-09-30 11:04:03,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:04:03,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:04:03,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:03,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:04:03,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:04,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:04:04,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:04:04,778 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:04:04,880 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:04:04,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:04:04,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:04:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:05,260 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:04:05,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 145 [2018-09-30 11:04:05,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-09-30 11:04:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-09-30 11:04:05,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:04:05,263 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states. [2018-09-30 11:04:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:04:06,951 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 11:04:06,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-09-30 11:04:06,951 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145 [2018-09-30 11:04:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:04:06,952 INFO L225 Difference]: With dead ends: 149 [2018-09-30 11:04:06,952 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 11:04:06,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:04:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 11:04:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 11:04:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 11:04:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 11:04:06,954 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-09-30 11:04:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:04:06,954 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 11:04:06,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-09-30 11:04:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 11:04:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 11:04:06,955 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:04:06,955 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-09-30 11:04:06,955 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:04:06,956 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:04:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-09-30 11:04:06,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:04:06,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:04:06,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:06,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:04:06,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:08,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:04:08,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:04:08,298 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:04:08,465 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-30 11:04:08,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:04:08,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:04:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:08,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:04:08,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 146 [2018-09-30 11:04:08,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-09-30 11:04:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-09-30 11:04:08,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:04:08,854 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 147 states. [2018-09-30 11:04:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:04:10,913 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-09-30 11:04:10,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-09-30 11:04:10,914 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 146 [2018-09-30 11:04:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:04:10,914 INFO L225 Difference]: With dead ends: 150 [2018-09-30 11:04:10,914 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 11:04:10,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:04:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 11:04:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-09-30 11:04:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-30 11:04:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-09-30 11:04:10,917 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-09-30 11:04:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:04:10,917 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-09-30 11:04:10,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-09-30 11:04:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-09-30 11:04:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-30 11:04:10,917 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:04:10,918 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-09-30 11:04:10,918 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:04:10,918 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:04:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-09-30 11:04:10,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:04:10,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:04:10,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:10,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:04:10,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:12,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:04:12,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:04:12,265 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:04:12,423 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 11:04:12,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:04:12,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:04:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:12,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:04:12,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 147 [2018-09-30 11:04:12,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 11:04:12,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 11:04:12,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:04:12,785 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states. [2018-09-30 11:04:14,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:04:14,939 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-09-30 11:04:14,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-09-30 11:04:14,939 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147 [2018-09-30 11:04:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:04:14,939 INFO L225 Difference]: With dead ends: 151 [2018-09-30 11:04:14,939 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 11:04:14,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:04:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 11:04:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 11:04:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 11:04:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-09-30 11:04:14,942 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-09-30 11:04:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:04:14,942 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-09-30 11:04:14,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 11:04:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-09-30 11:04:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 11:04:14,943 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:04:14,943 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-09-30 11:04:14,943 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:04:14,943 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:04:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-09-30 11:04:14,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:04:14,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:04:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:14,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:04:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:16,275 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:04:16,275 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:04:16,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:04:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:04:16,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:04:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:04:16,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:04:16,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 148 [2018-09-30 11:04:16,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-09-30 11:04:16,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-09-30 11:04:16,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:04:16,742 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 149 states. [2018-09-30 11:04:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:04:18,436 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-09-30 11:04:18,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-09-30 11:04:18,436 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 148 [2018-09-30 11:04:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:04:18,437 INFO L225 Difference]: With dead ends: 152 [2018-09-30 11:04:18,437 INFO L226 Difference]: Without dead ends: 150 [2018-09-30 11:04:18,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:04:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-30 11:04:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-09-30 11:04:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-09-30 11:04:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-09-30 11:04:18,439 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-09-30 11:04:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:04:18,440 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-09-30 11:04:18,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-09-30 11:04:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-09-30 11:04:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-30 11:04:18,440 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:04:18,440 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-09-30 11:04:18,440 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:04:18,440 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:04:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-09-30 11:04:18,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:04:18,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:04:18,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:18,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:04:18,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:04:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-30 11:04:19,348 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 11:04:19,352 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 11:04:19,352 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:04:19 BoogieIcfgContainer [2018-09-30 11:04:19,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 11:04:19,353 INFO L168 Benchmark]: Toolchain (without parser) took 248947.93 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 286.7 MB). Peak memory consumption was 315.5 MB. Max. memory is 7.1 GB. [2018-09-30 11:04:19,355 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:04:19,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.92 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. [2018-09-30 11:04:19,355 INFO L168 Benchmark]: Boogie Preprocessor took 20.74 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. [2018-09-30 11:04:19,356 INFO L168 Benchmark]: RCFGBuilder took 309.11 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. [2018-09-30 11:04:19,356 INFO L168 Benchmark]: TraceAbstraction took 248570.90 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 265.6 MB). Peak memory consumption was 294.4 MB. Max. memory is 7.1 GB. [2018-09-30 11:04:19,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.92 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 20.74 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 309.11 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 248570.90 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 265.6 MB). Peak memory consumption was 294.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 150 with TraceHistMax 146, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 148 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 248.4s OverallTime, 147 OverallIterations, 146 TraceHistogramMax, 109.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 440 SDtfs, 2 SDslu, 6148 SDs, 0 SdLazy, 17088 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21752 GetRequests, 10876 SyntacticMatches, 0 SemanticMatches, 10876 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=146, 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: 0.4s AutomataMinimizationTime, 146 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 11.3s SatisfiabilityAnalysisTime, 118.5s InterpolantComputationTime, 22043 NumberOfCodeBlocks, 22043 NumberOfCodeBlocksAsserted, 3015 NumberOfCheckSat, 21752 ConstructedInterpolants, 0 QuantifiedInterpolants, 10566158 SizeOfPredicates, 290 NumberOfNonLiveVariables, 43645 ConjunctsInSsa, 10875 ConjunctsInUnsatCore, 291 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1037330 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/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_11-04-19-369.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_11-04-19-369.csv Completed graceful shutdown