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/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 10:39:29,826 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:39:29,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:39:29,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:39:29,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:39:29,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:39:29,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:39:29,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:39:29,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:39:29,854 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:39:29,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-28 10:39:29,899 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 [2018-09-28 10:39:29,913 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:39:29,914 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:39:29,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:39:29,915 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:39:29,915 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:39:29,916 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:39:29,916 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:39:29,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:39:29,916 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:39:29,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:39:29,918 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:39:29,918 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:39:29,918 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:39:29,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:39:29,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:39:29,919 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:39:29,919 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:39:29,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:39:29,919 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:39:29,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:39:29,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:39:29,920 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:39:29,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:39:29,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:39:29,921 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:39:29,921 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 10:39:29,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:39:30,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:39:30,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:39:30,019 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:39:30,020 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:39:30,021 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-09-28 10:39:30,021 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-09-28 10:39:30,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:39:30,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:39:30,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:39:30,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:39:30,076 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:39:30,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,114 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 10:39:30,115 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 10:39:30,115 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 10:39:30,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:39:30,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:39:30,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:39:30,119 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:39:30,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/1) ... [2018-09-28 10:39:30,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:39:30,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:39:30,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:39:30,145 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:39:30,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (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 [2018-09-28 10:39:30,221 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-28 10:39:30,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-28 10:39:30,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-28 10:39:30,549 INFO L350 CfgBuilder]: Using library mode [2018-09-28 10:39:30,550 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:39:30 BoogieIcfgContainer [2018-09-28 10:39:30,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:39:30,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:39:30,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:39:30,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:39:30,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:39:30" (1/2) ... [2018-09-28 10:39:30,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64505281 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:39:30, skipping insertion in model container [2018-09-28 10:39:30,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:39:30" (2/2) ... [2018-09-28 10:39:30,559 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-09-28 10:39:30,568 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:39:30,576 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:39:30,628 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:39:30,629 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:39:30,630 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:39:30,630 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:39:30,630 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:39:30,630 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:39:30,630 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:39:30,630 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:39:30,631 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:39:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-28 10:39:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-28 10:39:30,651 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:30,652 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-28 10:39:30,653 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:30,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-09-28 10:39:30,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:30,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:30,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:30,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:30,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:30,851 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:39:30,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:39:30,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:39:30,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:39:30,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:30,896 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-28 10:39:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:31,032 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-09-28 10:39:31,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:39:31,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-28 10:39:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:31,056 INFO L225 Difference]: With dead ends: 22 [2018-09-28 10:39:31,056 INFO L226 Difference]: Without dead ends: 10 [2018-09-28 10:39:31,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-28 10:39:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-28 10:39:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-28 10:39:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-28 10:39:31,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-09-28 10:39:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:31,097 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-28 10:39:31,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:39:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-28 10:39:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-28 10:39:31,098 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:31,098 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-28 10:39:31,098 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:31,099 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-09-28 10:39:31,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:31,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:31,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:31,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:31,127 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:39:31,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:39:31,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:39:31,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:39:31,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:31,130 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-09-28 10:39:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:31,171 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-28 10:39:31,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:39:31,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-28 10:39:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:31,172 INFO L225 Difference]: With dead ends: 13 [2018-09-28 10:39:31,172 INFO L226 Difference]: Without dead ends: 11 [2018-09-28 10:39:31,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-28 10:39:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-28 10:39:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-28 10:39:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-28 10:39:31,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-09-28 10:39:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:31,179 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-28 10:39:31,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:39:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-28 10:39:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:39:31,180 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:31,181 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:31,182 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:31,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-09-28 10:39:31,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:31,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:31,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:31,243 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 [2018-09-28 10:39:31,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:31,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:31,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:31,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-28 10:39:31,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-28 10:39:31,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-28 10:39:31,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:31,413 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-09-28 10:39:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:31,573 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-28 10:39:31,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-28 10:39:31,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-28 10:39:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:31,579 INFO L225 Difference]: With dead ends: 17 [2018-09-28 10:39:31,579 INFO L226 Difference]: Without dead ends: 15 [2018-09-28 10:39:31,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-28 10:39:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-28 10:39:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-28 10:39:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-28 10:39:31,584 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-09-28 10:39:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:31,585 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-28 10:39:31,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-28 10:39:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-28 10:39:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-28 10:39:31,586 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:31,586 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:31,587 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:31,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:31,588 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-09-28 10:39:31,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:31,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:31,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:31,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:31,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:31,741 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:31,758 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:31,796 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:31,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:31,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:31,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:31,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-28 10:39:31,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:39:31,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:39:31,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:31,940 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-09-28 10:39:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:32,019 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-28 10:39:32,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:39:32,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-28 10:39:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:32,021 INFO L225 Difference]: With dead ends: 21 [2018-09-28 10:39:32,021 INFO L226 Difference]: Without dead ends: 19 [2018-09-28 10:39:32,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-28 10:39:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-28 10:39:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-28 10:39:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-28 10:39:32,026 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-09-28 10:39:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:32,027 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-28 10:39:32,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:39:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-28 10:39:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:39:32,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:32,028 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:32,029 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:32,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-09-28 10:39:32,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:32,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:32,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:32,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:32,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:32,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:32,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:32,131 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-28 10:39:32,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:32,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:32,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:32,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-28 10:39:32,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 10:39:32,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 10:39:32,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:32,317 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-09-28 10:39:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:32,374 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-28 10:39:32,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:39:32,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-28 10:39:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:32,376 INFO L225 Difference]: With dead ends: 25 [2018-09-28 10:39:32,376 INFO L226 Difference]: Without dead ends: 23 [2018-09-28 10:39:32,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-28 10:39:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-28 10:39:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-28 10:39:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-28 10:39:32,380 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-09-28 10:39:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:32,381 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-28 10:39:32,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 10:39:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-28 10:39:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-28 10:39:32,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:32,382 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:32,382 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:32,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:32,382 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-09-28 10:39:32,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:32,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:32,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:32,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:32,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:32,459 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 [2018-09-28 10:39:32,467 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:32,478 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:32,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:32,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:32,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:32,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-28 10:39:32,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:39:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:39:32,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:32,631 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-09-28 10:39:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:32,866 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-28 10:39:32,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:39:32,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-28 10:39:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:32,868 INFO L225 Difference]: With dead ends: 29 [2018-09-28 10:39:32,869 INFO L226 Difference]: Without dead ends: 27 [2018-09-28 10:39:32,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-28 10:39:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-28 10:39:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-28 10:39:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-28 10:39:32,873 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-09-28 10:39:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:32,873 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-28 10:39:32,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:39:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-28 10:39:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-28 10:39:32,874 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:32,875 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:32,875 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:32,875 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:32,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-09-28 10:39:32,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:32,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:32,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:32,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:33,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:33,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:33,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:33,224 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-28 10:39:33,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:33,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:33,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:33,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-28 10:39:33,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:39:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:39:33,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:33,330 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-09-28 10:39:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:33,519 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-28 10:39:33,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-28 10:39:33,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-28 10:39:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:33,521 INFO L225 Difference]: With dead ends: 33 [2018-09-28 10:39:33,521 INFO L226 Difference]: Without dead ends: 31 [2018-09-28 10:39:33,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-28 10:39:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-28 10:39:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-28 10:39:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-28 10:39:33,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-09-28 10:39:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:33,527 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-28 10:39:33,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:39:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-28 10:39:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-28 10:39:33,528 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:33,528 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:33,528 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:33,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-09-28 10:39:33,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:33,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:33,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:33,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:33,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:33,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:33,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:33,643 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:33,672 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-28 10:39:33,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:33,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:33,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:33,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-28 10:39:33,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:39:33,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:39:33,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:33,911 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-09-28 10:39:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:34,017 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-28 10:39:34,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-28 10:39:34,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-28 10:39:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:34,019 INFO L225 Difference]: With dead ends: 37 [2018-09-28 10:39:34,019 INFO L226 Difference]: Without dead ends: 35 [2018-09-28 10:39:34,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-28 10:39:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-28 10:39:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-28 10:39:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-28 10:39:34,023 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-09-28 10:39:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:34,024 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-28 10:39:34,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:39:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-28 10:39:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-28 10:39:34,025 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:34,025 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:34,025 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:34,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-09-28 10:39:34,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:34,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:34,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:34,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:34,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:34,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:34,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:34,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:34,387 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:34,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-28 10:39:34,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:39:34,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:39:34,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:34,389 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-09-28 10:39:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:34,516 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-28 10:39:34,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-28 10:39:34,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-28 10:39:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:34,519 INFO L225 Difference]: With dead ends: 41 [2018-09-28 10:39:34,519 INFO L226 Difference]: Without dead ends: 39 [2018-09-28 10:39:34,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-28 10:39:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-28 10:39:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-28 10:39:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-28 10:39:34,524 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-09-28 10:39:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:34,525 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-28 10:39:34,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:39:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-28 10:39:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-28 10:39:34,526 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:34,526 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:34,527 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:34,527 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:34,527 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-09-28 10:39:34,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:34,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:34,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:34,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:34,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:34,627 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 [2018-09-28 10:39:34,644 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:34,664 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:34,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:34,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:34,774 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:34,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-28 10:39:34,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:39:34,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:39:34,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:34,775 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-09-28 10:39:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:34,875 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-28 10:39:34,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-28 10:39:34,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-28 10:39:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:34,877 INFO L225 Difference]: With dead ends: 45 [2018-09-28 10:39:34,878 INFO L226 Difference]: Without dead ends: 43 [2018-09-28 10:39:34,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-28 10:39:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-28 10:39:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-28 10:39:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-28 10:39:34,883 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-09-28 10:39:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:34,883 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-28 10:39:34,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:39:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-28 10:39:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-28 10:39:34,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:34,885 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:34,885 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:34,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:34,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-09-28 10:39:34,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:34,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:34,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:34,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:35,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:35,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:35,027 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:35,055 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-28 10:39:35,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:35,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:35,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:35,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-28 10:39:35,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-28 10:39:35,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-28 10:39:35,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:35,184 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-09-28 10:39:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:35,439 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-28 10:39:35,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:39:35,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-28 10:39:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:35,440 INFO L225 Difference]: With dead ends: 49 [2018-09-28 10:39:35,441 INFO L226 Difference]: Without dead ends: 47 [2018-09-28 10:39:35,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-28 10:39:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-28 10:39:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-28 10:39:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-28 10:39:35,446 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-09-28 10:39:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:35,447 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-28 10:39:35,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-28 10:39:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-28 10:39:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-28 10:39:35,448 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:35,448 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:35,448 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:35,449 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-09-28 10:39:35,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:35,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:35,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:35,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:35,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:35,581 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:35,581 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 [2018-09-28 10:39:35,589 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:35,606 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:35,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:35,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:35,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:35,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-28 10:39:35,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:39:35,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:39:35,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:35,761 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-09-28 10:39:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:35,888 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-28 10:39:35,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:39:35,892 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-28 10:39:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:35,892 INFO L225 Difference]: With dead ends: 53 [2018-09-28 10:39:35,893 INFO L226 Difference]: Without dead ends: 51 [2018-09-28 10:39:35,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-28 10:39:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-28 10:39:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-28 10:39:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-28 10:39:35,898 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-09-28 10:39:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:35,898 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-28 10:39:35,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:39:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-28 10:39:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-28 10:39:35,899 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:35,899 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:35,900 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:35,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-09-28 10:39:35,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:35,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:35,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:36,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:36,061 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 [2018-09-28 10:39:36,070 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:36,088 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-28 10:39:36,088 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:36,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:36,313 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:36,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-28 10:39:36,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:39:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:39:36,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:36,315 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-09-28 10:39:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:36,468 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-28 10:39:36,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:39:36,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-28 10:39:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:36,470 INFO L225 Difference]: With dead ends: 57 [2018-09-28 10:39:36,470 INFO L226 Difference]: Without dead ends: 55 [2018-09-28 10:39:36,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-28 10:39:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-28 10:39:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-28 10:39:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-28 10:39:36,476 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-09-28 10:39:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:36,476 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-28 10:39:36,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:39:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-28 10:39:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-28 10:39:36,478 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:36,478 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:36,478 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:36,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-09-28 10:39:36,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:36,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:36,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:36,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:36,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:37,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:37,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:37,229 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:37,388 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-28 10:39:37,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:37,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:37,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:37,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-28 10:39:37,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:39:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:39:37,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:37,770 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-09-28 10:39:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:37,829 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-28 10:39:37,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-28 10:39:37,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-28 10:39:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:37,831 INFO L225 Difference]: With dead ends: 61 [2018-09-28 10:39:37,831 INFO L226 Difference]: Without dead ends: 59 [2018-09-28 10:39:37,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-28 10:39:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-28 10:39:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-28 10:39:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-28 10:39:37,836 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-09-28 10:39:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:37,837 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-28 10:39:37,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:39:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-28 10:39:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-28 10:39:37,838 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:37,838 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:37,838 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:37,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-09-28 10:39:37,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:37,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:37,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:37,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:37,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:37,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:37,963 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 [2018-09-28 10:39:37,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:38,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:39,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:39,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-28 10:39:39,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:39:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:39:39,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:39,230 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-09-28 10:39:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:39,321 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-28 10:39:39,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-28 10:39:39,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-28 10:39:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:39,323 INFO L225 Difference]: With dead ends: 65 [2018-09-28 10:39:39,323 INFO L226 Difference]: Without dead ends: 63 [2018-09-28 10:39:39,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:39,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-28 10:39:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-28 10:39:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-28 10:39:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-28 10:39:39,330 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-09-28 10:39:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:39,330 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-28 10:39:39,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:39:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-28 10:39:39,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-28 10:39:39,332 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:39,332 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:39,332 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:39,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-09-28 10:39:39,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:39,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:39,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:39,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:39,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:39,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:39,464 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 [2018-09-28 10:39:39,472 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:39,513 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:39,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:39,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:39,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:39,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-28 10:39:39,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:39:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:39:39,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:39,851 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-09-28 10:39:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:39,986 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-28 10:39:39,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:39:39,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-28 10:39:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:39,988 INFO L225 Difference]: With dead ends: 69 [2018-09-28 10:39:39,988 INFO L226 Difference]: Without dead ends: 67 [2018-09-28 10:39:39,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-28 10:39:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-28 10:39:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-28 10:39:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-28 10:39:39,995 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-09-28 10:39:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:39,996 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-28 10:39:39,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:39:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-28 10:39:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-28 10:39:39,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:39,997 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:39,997 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:39,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:39,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-09-28 10:39:39,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:39,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:39,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:39,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:39,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:40,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:40,263 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 [2018-09-28 10:39:40,271 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:40,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-28 10:39:40,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:40,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:40,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:40,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-28 10:39:40,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-28 10:39:40,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-28 10:39:40,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:40,676 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-09-28 10:39:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:40,811 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-28 10:39:40,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:39:40,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-28 10:39:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:40,813 INFO L225 Difference]: With dead ends: 73 [2018-09-28 10:39:40,813 INFO L226 Difference]: Without dead ends: 71 [2018-09-28 10:39:40,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-28 10:39:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-28 10:39:40,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-28 10:39:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-28 10:39:40,818 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-09-28 10:39:40,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:40,819 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-28 10:39:40,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-28 10:39:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-28 10:39:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-28 10:39:40,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:40,820 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:40,820 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:40,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-09-28 10:39:40,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:40,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:40,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:40,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:40,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:40,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:40,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:40,992 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:41,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:41,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:41,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:41,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:41,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-28 10:39:41,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-28 10:39:41,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-28 10:39:41,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:41,631 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-09-28 10:39:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:41,818 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-28 10:39:41,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-28 10:39:41,818 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-28 10:39:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:41,819 INFO L225 Difference]: With dead ends: 77 [2018-09-28 10:39:41,820 INFO L226 Difference]: Without dead ends: 75 [2018-09-28 10:39:41,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-28 10:39:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-28 10:39:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-28 10:39:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-28 10:39:41,824 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-09-28 10:39:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:41,825 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-28 10:39:41,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-28 10:39:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-28 10:39:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-28 10:39:41,826 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:41,826 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:41,826 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:41,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-09-28 10:39:41,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:41,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:41,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:42,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:42,310 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 [2018-09-28 10:39:42,317 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:42,343 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-28 10:39:42,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:42,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:42,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:42,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-28 10:39:42,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:39:42,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:39:42,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:42,497 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-09-28 10:39:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:42,652 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-28 10:39:42,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-28 10:39:42,653 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-28 10:39:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:42,654 INFO L225 Difference]: With dead ends: 81 [2018-09-28 10:39:42,655 INFO L226 Difference]: Without dead ends: 79 [2018-09-28 10:39:42,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-28 10:39:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-28 10:39:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-28 10:39:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-28 10:39:42,659 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-09-28 10:39:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:42,660 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-28 10:39:42,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:39:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-28 10:39:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-28 10:39:42,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:42,661 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:42,661 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:42,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-09-28 10:39:42,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:42,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:42,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:42,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:42,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:42,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:42,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:42,858 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:42,881 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-28 10:39:42,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:42,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:43,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:43,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-28 10:39:43,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-28 10:39:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-28 10:39:43,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:43,060 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-09-28 10:39:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:43,176 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-28 10:39:43,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-28 10:39:43,176 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-28 10:39:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:43,177 INFO L225 Difference]: With dead ends: 85 [2018-09-28 10:39:43,178 INFO L226 Difference]: Without dead ends: 83 [2018-09-28 10:39:43,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-28 10:39:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-28 10:39:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-28 10:39:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-28 10:39:43,182 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-09-28 10:39:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:43,183 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-28 10:39:43,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-28 10:39:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-28 10:39:43,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-28 10:39:43,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:43,184 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:43,184 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:43,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:43,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-09-28 10:39:43,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:43,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:43,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:43,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:43,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:43,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:43,356 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 [2018-09-28 10:39:43,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:43,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:43,642 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:43,643 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-28 10:39:43,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-28 10:39:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-28 10:39:43,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:43,644 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-09-28 10:39:43,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:43,770 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-28 10:39:43,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-28 10:39:43,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-28 10:39:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:43,771 INFO L225 Difference]: With dead ends: 89 [2018-09-28 10:39:43,771 INFO L226 Difference]: Without dead ends: 87 [2018-09-28 10:39:43,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-28 10:39:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-28 10:39:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-28 10:39:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-28 10:39:43,774 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-09-28 10:39:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:43,774 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-28 10:39:43,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-28 10:39:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-28 10:39:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-28 10:39:43,775 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:43,775 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:43,776 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:43,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:43,776 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-09-28 10:39:43,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:43,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:43,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:43,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:43,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:43,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:43,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:43,972 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:44,017 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:44,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:44,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:44,249 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:44,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-28 10:39:44,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-28 10:39:44,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-28 10:39:44,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:44,250 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-09-28 10:39:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:44,333 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-28 10:39:44,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-28 10:39:44,336 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-28 10:39:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:44,337 INFO L225 Difference]: With dead ends: 93 [2018-09-28 10:39:44,337 INFO L226 Difference]: Without dead ends: 91 [2018-09-28 10:39:44,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-28 10:39:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-28 10:39:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-28 10:39:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-28 10:39:44,340 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-09-28 10:39:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:44,340 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-28 10:39:44,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-28 10:39:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-28 10:39:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-28 10:39:44,341 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:44,341 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:44,342 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:44,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-09-28 10:39:44,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:44,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:44,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:44,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:44,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:44,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:44,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:44,842 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:44,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-28 10:39:44,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:44,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:45,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:45,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-28 10:39:45,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-28 10:39:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-28 10:39:45,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:45,053 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-09-28 10:39:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:45,211 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-28 10:39:45,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:39:45,212 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-28 10:39:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:45,213 INFO L225 Difference]: With dead ends: 97 [2018-09-28 10:39:45,213 INFO L226 Difference]: Without dead ends: 95 [2018-09-28 10:39:45,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-28 10:39:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-28 10:39:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-28 10:39:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-28 10:39:45,216 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-09-28 10:39:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:45,216 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-28 10:39:45,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-28 10:39:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-28 10:39:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-28 10:39:45,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:45,217 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:45,217 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:45,217 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-09-28 10:39:45,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:45,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:45,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:45,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:45,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:45,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:45,390 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 [2018-09-28 10:39:45,398 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:45,416 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:45,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:45,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:45,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:45,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-28 10:39:45,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-28 10:39:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-28 10:39:45,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:45,629 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-09-28 10:39:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:45,973 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-28 10:39:45,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-28 10:39:45,973 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-28 10:39:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:45,974 INFO L225 Difference]: With dead ends: 101 [2018-09-28 10:39:45,975 INFO L226 Difference]: Without dead ends: 99 [2018-09-28 10:39:45,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-28 10:39:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-28 10:39:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-28 10:39:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-28 10:39:45,978 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-09-28 10:39:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:45,978 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-28 10:39:45,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-28 10:39:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-28 10:39:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-28 10:39:45,979 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:45,979 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:45,979 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:45,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:45,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-09-28 10:39:45,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:45,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:45,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:45,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:45,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:46,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:46,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:46,342 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:46,368 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-28 10:39:46,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:46,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:46,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:46,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-28 10:39:46,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-28 10:39:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-28 10:39:46,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:46,770 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-09-28 10:39:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:47,155 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-28 10:39:47,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-28 10:39:47,156 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-28 10:39:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:47,157 INFO L225 Difference]: With dead ends: 105 [2018-09-28 10:39:47,157 INFO L226 Difference]: Without dead ends: 103 [2018-09-28 10:39:47,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-28 10:39:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-28 10:39:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-28 10:39:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-28 10:39:47,160 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-09-28 10:39:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:47,160 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-28 10:39:47,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-28 10:39:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-28 10:39:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-28 10:39:47,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:47,161 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:47,162 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:47,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:47,162 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-09-28 10:39:47,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:47,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:47,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:47,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:47,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:47,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:47,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:47,568 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:47,599 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-28 10:39:47,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:47,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:47,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:47,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-28 10:39:47,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-28 10:39:47,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-28 10:39:47,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:47,852 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-09-28 10:39:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:47,971 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-28 10:39:47,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:39:47,972 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-28 10:39:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:47,973 INFO L225 Difference]: With dead ends: 109 [2018-09-28 10:39:47,973 INFO L226 Difference]: Without dead ends: 107 [2018-09-28 10:39:47,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-28 10:39:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-28 10:39:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-28 10:39:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-28 10:39:47,977 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-09-28 10:39:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:47,977 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-28 10:39:47,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-28 10:39:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-28 10:39:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-28 10:39:47,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:47,978 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:47,978 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:47,978 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:47,979 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-09-28 10:39:47,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:47,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:47,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:47,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:47,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:48,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:48,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:48,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:48,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:48,467 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:48,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-28 10:39:48,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-28 10:39:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-28 10:39:48,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:48,468 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-09-28 10:39:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:48,655 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-28 10:39:48,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-28 10:39:48,655 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-28 10:39:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:48,656 INFO L225 Difference]: With dead ends: 113 [2018-09-28 10:39:48,656 INFO L226 Difference]: Without dead ends: 111 [2018-09-28 10:39:48,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-28 10:39:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-28 10:39:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-28 10:39:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-28 10:39:48,659 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-09-28 10:39:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:48,659 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-28 10:39:48,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-28 10:39:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-28 10:39:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-28 10:39:48,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:48,660 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:48,661 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:48,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-09-28 10:39:48,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:48,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:48,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:48,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:48,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:49,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:49,575 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 [2018-09-28 10:39:49,585 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:49,608 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:49,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:49,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:49,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:49,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-28 10:39:49,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-28 10:39:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-28 10:39:49,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:49,800 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-09-28 10:39:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:50,274 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-28 10:39:50,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:39:50,274 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-28 10:39:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:50,275 INFO L225 Difference]: With dead ends: 117 [2018-09-28 10:39:50,275 INFO L226 Difference]: Without dead ends: 115 [2018-09-28 10:39:50,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-28 10:39:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-28 10:39:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-28 10:39:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-28 10:39:50,279 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-09-28 10:39:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:50,279 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-28 10:39:50,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-28 10:39:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-28 10:39:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-28 10:39:50,279 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:50,280 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:50,280 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:50,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-09-28 10:39:50,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:50,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:50,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:50,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:50,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:50,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:50,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:50,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:50,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-28 10:39:50,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:50,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:51,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:51,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-28 10:39:51,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-28 10:39:51,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-28 10:39:51,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:51,099 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-09-28 10:39:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:51,290 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-28 10:39:51,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-28 10:39:51,290 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-28 10:39:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:51,291 INFO L225 Difference]: With dead ends: 121 [2018-09-28 10:39:51,291 INFO L226 Difference]: Without dead ends: 119 [2018-09-28 10:39:51,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-28 10:39:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-28 10:39:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-28 10:39:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-28 10:39:51,295 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-09-28 10:39:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:51,295 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-28 10:39:51,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-28 10:39:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-28 10:39:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-28 10:39:51,296 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:51,296 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:51,297 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:51,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-09-28 10:39:51,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:51,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:51,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:51,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:51,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:51,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:51,521 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:51,530 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:51,555 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:51,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:51,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:51,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:51,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-28 10:39:51,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-28 10:39:51,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-28 10:39:51,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:51,795 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-09-28 10:39:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:51,990 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-28 10:39:51,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-28 10:39:51,991 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-28 10:39:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:51,992 INFO L225 Difference]: With dead ends: 125 [2018-09-28 10:39:51,992 INFO L226 Difference]: Without dead ends: 123 [2018-09-28 10:39:51,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-28 10:39:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-28 10:39:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-28 10:39:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-28 10:39:51,996 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-09-28 10:39:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:51,996 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-28 10:39:51,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-28 10:39:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-28 10:39:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-28 10:39:51,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:51,997 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:51,997 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:51,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-09-28 10:39:51,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:51,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:51,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:51,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:51,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:52,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:52,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:52,350 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:52,420 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-28 10:39:52,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:52,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:52,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:52,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-28 10:39:52,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-28 10:39:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-28 10:39:52,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:52,676 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-09-28 10:39:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:52,867 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-28 10:39:52,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-28 10:39:52,868 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-28 10:39:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:52,869 INFO L225 Difference]: With dead ends: 129 [2018-09-28 10:39:52,869 INFO L226 Difference]: Without dead ends: 127 [2018-09-28 10:39:52,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-28 10:39:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-28 10:39:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-28 10:39:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-28 10:39:52,871 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-09-28 10:39:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:52,871 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-28 10:39:52,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-28 10:39:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-28 10:39:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-28 10:39:52,872 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:52,872 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:52,872 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:52,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-09-28 10:39:52,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:52,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:52,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:52,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:52,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:53,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:53,091 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 [2018-09-28 10:39:53,098 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:53,138 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-28 10:39:53,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:53,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:53,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:53,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-28 10:39:53,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-28 10:39:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-28 10:39:53,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:53,381 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-09-28 10:39:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:53,565 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-28 10:39:53,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-28 10:39:53,565 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-28 10:39:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:53,566 INFO L225 Difference]: With dead ends: 133 [2018-09-28 10:39:53,566 INFO L226 Difference]: Without dead ends: 131 [2018-09-28 10:39:53,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-28 10:39:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-28 10:39:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-28 10:39:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-28 10:39:53,571 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-09-28 10:39:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:53,571 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-28 10:39:53,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-28 10:39:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-28 10:39:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-28 10:39:53,572 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:53,572 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:53,572 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:53,572 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-09-28 10:39:53,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:53,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:53,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:53,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:53,856 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 [2018-09-28 10:39:53,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:53,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:54,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:54,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-28 10:39:54,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-28 10:39:54,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-28 10:39:54,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:54,262 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-09-28 10:39:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:54,461 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-28 10:39:54,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-28 10:39:54,462 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-28 10:39:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:54,463 INFO L225 Difference]: With dead ends: 137 [2018-09-28 10:39:54,463 INFO L226 Difference]: Without dead ends: 135 [2018-09-28 10:39:54,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-28 10:39:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-28 10:39:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-28 10:39:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-28 10:39:54,466 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-09-28 10:39:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:54,467 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-28 10:39:54,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-28 10:39:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-28 10:39:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-28 10:39:54,467 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:54,467 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:54,468 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:54,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-09-28 10:39:54,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:54,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:54,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:39:54,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:54,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:54,779 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 [2018-09-28 10:39:54,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:39:54,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:39:54,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:54,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:55,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:55,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-28 10:39:55,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-28 10:39:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-28 10:39:55,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:55,067 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-09-28 10:39:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:55,283 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-28 10:39:55,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-28 10:39:55,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-28 10:39:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:55,285 INFO L225 Difference]: With dead ends: 141 [2018-09-28 10:39:55,285 INFO L226 Difference]: Without dead ends: 139 [2018-09-28 10:39:55,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-28 10:39:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-28 10:39:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-28 10:39:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-28 10:39:55,287 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-09-28 10:39:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:55,288 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-28 10:39:55,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-28 10:39:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-28 10:39:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-28 10:39:55,289 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:55,289 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:55,289 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:55,289 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-09-28 10:39:55,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:55,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:55,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:55,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:55,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:55,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:55,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:55,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:39:55,543 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-28 10:39:55,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:55,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:55,789 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:55,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-28 10:39:55,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-28 10:39:55,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-28 10:39:55,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:55,790 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-09-28 10:39:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:55,988 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-28 10:39:55,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-28 10:39:55,989 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-28 10:39:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:55,990 INFO L225 Difference]: With dead ends: 145 [2018-09-28 10:39:55,990 INFO L226 Difference]: Without dead ends: 143 [2018-09-28 10:39:55,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-28 10:39:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-28 10:39:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-28 10:39:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-28 10:39:55,994 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-09-28 10:39:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:55,994 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-28 10:39:55,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-28 10:39:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-28 10:39:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-28 10:39:55,995 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:55,996 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:55,996 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:55,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-09-28 10:39:55,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:55,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:55,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:56,242 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:56,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:56,250 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:39:56,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:39:56,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:56,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:56,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:56,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-28 10:39:56,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-28 10:39:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-28 10:39:56,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:56,563 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-09-28 10:39:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:56,856 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-28 10:39:56,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-28 10:39:56,856 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-28 10:39:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:56,858 INFO L225 Difference]: With dead ends: 149 [2018-09-28 10:39:56,858 INFO L226 Difference]: Without dead ends: 147 [2018-09-28 10:39:56,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-28 10:39:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-28 10:39:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-28 10:39:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-28 10:39:56,862 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-09-28 10:39:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:56,863 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-28 10:39:56,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-28 10:39:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-28 10:39:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-28 10:39:56,863 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:56,864 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:56,864 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:56,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-09-28 10:39:56,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:56,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:56,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:56,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:56,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:57,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:57,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:39:57,650 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:39:57,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-28 10:39:57,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:57,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:39:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:58,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:39:58,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-28 10:39:58,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-28 10:39:58,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-28 10:39:58,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:39:58,116 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-09-28 10:39:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:39:58,396 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-28 10:39:58,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-28 10:39:58,396 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-28 10:39:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:39:58,398 INFO L225 Difference]: With dead ends: 153 [2018-09-28 10:39:58,398 INFO L226 Difference]: Without dead ends: 151 [2018-09-28 10:39:58,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:39:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-28 10:39:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-28 10:39:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-28 10:39:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-28 10:39:58,402 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-09-28 10:39:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:39:58,402 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-28 10:39:58,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-28 10:39:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-28 10:39:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-28 10:39:58,403 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:39:58,403 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-09-28 10:39:58,403 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:39:58,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:39:58,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-09-28 10:39:58,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:39:58,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:39:58,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:58,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:39:58,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:39:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:39:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:39:59,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:39:59,574 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 [2018-09-28 10:39:59,581 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:39:59,627 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-28 10:39:59,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:39:59,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:00,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:00,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-28 10:40:00,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-28 10:40:00,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-28 10:40:00,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:00,374 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-09-28 10:40:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:00,546 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-28 10:40:00,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:40:00,547 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-28 10:40:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:00,548 INFO L225 Difference]: With dead ends: 157 [2018-09-28 10:40:00,548 INFO L226 Difference]: Without dead ends: 155 [2018-09-28 10:40:00,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-28 10:40:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-28 10:40:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-28 10:40:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-28 10:40:00,552 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-09-28 10:40:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:00,553 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-28 10:40:00,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-28 10:40:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-28 10:40:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-28 10:40:00,554 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:00,554 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:00,554 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:00,554 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-09-28 10:40:00,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:00,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:00,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:00,555 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:00,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:01,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:01,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:01,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:01,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:01,699 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:01,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-28 10:40:01,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-28 10:40:01,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-28 10:40:01,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:01,700 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-09-28 10:40:01,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:01,957 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-28 10:40:01,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-28 10:40:01,960 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-28 10:40:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:01,961 INFO L225 Difference]: With dead ends: 161 [2018-09-28 10:40:01,961 INFO L226 Difference]: Without dead ends: 159 [2018-09-28 10:40:01,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-28 10:40:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-28 10:40:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-28 10:40:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-28 10:40:01,964 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-09-28 10:40:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:01,965 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-28 10:40:01,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-28 10:40:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-28 10:40:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-28 10:40:01,966 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:01,966 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:01,966 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:01,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:01,966 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-09-28 10:40:01,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:01,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:01,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:01,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:01,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:02,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:02,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:02,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:02,680 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:02,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:02,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:03,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:03,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-28 10:40:03,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-28 10:40:03,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-28 10:40:03,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:03,900 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-09-28 10:40:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:04,303 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-28 10:40:04,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-28 10:40:04,303 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-28 10:40:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:04,304 INFO L225 Difference]: With dead ends: 165 [2018-09-28 10:40:04,305 INFO L226 Difference]: Without dead ends: 163 [2018-09-28 10:40:04,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-28 10:40:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-28 10:40:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-28 10:40:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-28 10:40:04,308 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-09-28 10:40:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:04,308 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-28 10:40:04,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-28 10:40:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-28 10:40:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-28 10:40:04,309 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:04,309 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:04,309 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:04,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-09-28 10:40:04,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:04,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:04,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:04,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:04,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:05,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:05,331 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 [2018-09-28 10:40:05,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:05,496 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-28 10:40:05,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:05,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:05,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:05,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-28 10:40:05,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-28 10:40:05,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-28 10:40:05,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:05,795 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-09-28 10:40:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:06,148 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-28 10:40:06,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-28 10:40:06,149 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-28 10:40:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:06,150 INFO L225 Difference]: With dead ends: 169 [2018-09-28 10:40:06,151 INFO L226 Difference]: Without dead ends: 167 [2018-09-28 10:40:06,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-28 10:40:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-28 10:40:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-28 10:40:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-28 10:40:06,154 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-09-28 10:40:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:06,155 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-28 10:40:06,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-28 10:40:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-28 10:40:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-28 10:40:06,156 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:06,156 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:06,156 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:06,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-09-28 10:40:06,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:06,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:06,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:06,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:06,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:06,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:06,622 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 [2018-09-28 10:40:06,629 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:06,662 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:06,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:06,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:06,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:06,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-28 10:40:06,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-28 10:40:06,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-28 10:40:06,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:06,951 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-09-28 10:40:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:07,172 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-28 10:40:07,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-28 10:40:07,172 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-28 10:40:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:07,173 INFO L225 Difference]: With dead ends: 173 [2018-09-28 10:40:07,173 INFO L226 Difference]: Without dead ends: 171 [2018-09-28 10:40:07,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-28 10:40:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-28 10:40:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-28 10:40:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-28 10:40:07,176 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-09-28 10:40:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:07,177 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-28 10:40:07,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-28 10:40:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-28 10:40:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-28 10:40:07,178 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:07,178 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:07,178 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:07,178 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-09-28 10:40:07,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:07,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:07,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:07,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:07,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:07,985 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:07,986 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 [2018-09-28 10:40:07,994 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:08,061 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-28 10:40:08,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:08,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:08,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:08,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-28 10:40:08,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-28 10:40:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-28 10:40:08,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:08,403 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-09-28 10:40:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:08,863 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-28 10:40:08,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-28 10:40:08,863 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-28 10:40:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:08,864 INFO L225 Difference]: With dead ends: 177 [2018-09-28 10:40:08,864 INFO L226 Difference]: Without dead ends: 175 [2018-09-28 10:40:08,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-28 10:40:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-28 10:40:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-28 10:40:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-28 10:40:08,868 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-09-28 10:40:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:08,868 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-28 10:40:08,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-28 10:40:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-28 10:40:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-28 10:40:08,869 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:08,869 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:08,869 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:08,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-09-28 10:40:08,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:08,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:08,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:08,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:08,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:09,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:09,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:09,831 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:09,881 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-28 10:40:09,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:09,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:10,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:10,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-28 10:40:10,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-28 10:40:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-28 10:40:10,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:10,212 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-09-28 10:40:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:10,570 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-28 10:40:10,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-28 10:40:10,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-28 10:40:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:10,572 INFO L225 Difference]: With dead ends: 181 [2018-09-28 10:40:10,572 INFO L226 Difference]: Without dead ends: 179 [2018-09-28 10:40:10,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-28 10:40:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-28 10:40:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-28 10:40:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-28 10:40:10,576 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-09-28 10:40:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:10,576 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-28 10:40:10,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-28 10:40:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-28 10:40:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-28 10:40:10,578 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:10,578 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:10,578 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:10,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-09-28 10:40:10,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:10,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:10,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:10,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:10,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:10,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:10,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:10,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:10,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:11,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:11,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-28 10:40:11,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-28 10:40:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-28 10:40:11,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:11,222 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-09-28 10:40:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:11,488 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-28 10:40:11,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-28 10:40:11,488 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-28 10:40:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:11,489 INFO L225 Difference]: With dead ends: 185 [2018-09-28 10:40:11,489 INFO L226 Difference]: Without dead ends: 183 [2018-09-28 10:40:11,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-28 10:40:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-28 10:40:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-28 10:40:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-28 10:40:11,493 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-09-28 10:40:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:11,494 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-28 10:40:11,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-28 10:40:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-28 10:40:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-28 10:40:11,495 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:11,495 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:11,495 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:11,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-09-28 10:40:11,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:11,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:11,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:11,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:11,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:11,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:11,816 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 [2018-09-28 10:40:11,824 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:11,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:11,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:11,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:12,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:12,170 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-28 10:40:12,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-28 10:40:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-28 10:40:12,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:12,171 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-09-28 10:40:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:12,504 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-28 10:40:12,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-28 10:40:12,505 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-28 10:40:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:12,506 INFO L225 Difference]: With dead ends: 189 [2018-09-28 10:40:12,506 INFO L226 Difference]: Without dead ends: 187 [2018-09-28 10:40:12,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-28 10:40:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-28 10:40:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-28 10:40:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-28 10:40:12,510 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-09-28 10:40:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:12,510 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-28 10:40:12,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-28 10:40:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-28 10:40:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-28 10:40:12,511 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:12,511 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:12,511 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:12,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-09-28 10:40:12,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:12,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:12,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:12,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:12,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:12,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:12,928 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 [2018-09-28 10:40:12,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:13,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-28 10:40:13,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:13,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:13,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:13,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-28 10:40:13,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-28 10:40:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-28 10:40:13,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:13,973 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-09-28 10:40:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:15,864 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-28 10:40:15,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-28 10:40:15,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-28 10:40:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:15,866 INFO L225 Difference]: With dead ends: 193 [2018-09-28 10:40:15,866 INFO L226 Difference]: Without dead ends: 191 [2018-09-28 10:40:15,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-28 10:40:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-28 10:40:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-28 10:40:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-28 10:40:15,870 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-09-28 10:40:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:15,870 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-28 10:40:15,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-28 10:40:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-28 10:40:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-28 10:40:15,871 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:15,871 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:15,872 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:15,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-09-28 10:40:15,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:15,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:15,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:15,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:15,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:16,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:16,467 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 [2018-09-28 10:40:16,475 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:16,513 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:16,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:16,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:16,988 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:16,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-28 10:40:16,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-28 10:40:16,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-28 10:40:16,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:16,990 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-09-28 10:40:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:17,284 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-28 10:40:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-28 10:40:17,284 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-28 10:40:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:17,285 INFO L225 Difference]: With dead ends: 197 [2018-09-28 10:40:17,285 INFO L226 Difference]: Without dead ends: 195 [2018-09-28 10:40:17,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-28 10:40:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-28 10:40:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-28 10:40:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-28 10:40:17,289 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-09-28 10:40:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:17,289 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-28 10:40:17,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-28 10:40:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-28 10:40:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-28 10:40:17,290 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:17,291 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:17,291 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:17,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-09-28 10:40:17,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:17,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:17,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:17,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:17,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:18,015 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:18,015 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 [2018-09-28 10:40:18,023 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:18,086 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-28 10:40:18,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:18,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:18,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:18,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-28 10:40:18,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-28 10:40:18,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-28 10:40:18,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:18,606 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-09-28 10:40:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:18,983 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-28 10:40:18,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-28 10:40:18,984 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-28 10:40:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:18,985 INFO L225 Difference]: With dead ends: 201 [2018-09-28 10:40:18,985 INFO L226 Difference]: Without dead ends: 199 [2018-09-28 10:40:18,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-28 10:40:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-28 10:40:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-28 10:40:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-28 10:40:18,987 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-09-28 10:40:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:18,988 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-28 10:40:18,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-28 10:40:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-28 10:40:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-28 10:40:18,989 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:18,989 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:18,989 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:18,989 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-09-28 10:40:18,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:18,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:18,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:18,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:18,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:19,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:19,410 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 [2018-09-28 10:40:19,429 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:19,490 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-28 10:40:19,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:19,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:19,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:19,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-28 10:40:19,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-28 10:40:19,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-28 10:40:19,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:19,821 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-09-28 10:40:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:20,200 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-28 10:40:20,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-28 10:40:20,200 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-28 10:40:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:20,201 INFO L225 Difference]: With dead ends: 205 [2018-09-28 10:40:20,201 INFO L226 Difference]: Without dead ends: 203 [2018-09-28 10:40:20,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-28 10:40:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-28 10:40:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-28 10:40:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-28 10:40:20,204 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-09-28 10:40:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:20,204 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-28 10:40:20,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-28 10:40:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-28 10:40:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-28 10:40:20,205 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:20,205 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:20,206 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:20,206 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:20,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-09-28 10:40:20,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:20,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:20,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:20,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:20,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:20,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:20,673 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:20,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:20,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:21,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:21,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-28 10:40:21,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-28 10:40:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-28 10:40:21,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:21,060 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-09-28 10:40:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:21,504 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-28 10:40:21,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-28 10:40:21,504 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-28 10:40:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:21,506 INFO L225 Difference]: With dead ends: 209 [2018-09-28 10:40:21,506 INFO L226 Difference]: Without dead ends: 207 [2018-09-28 10:40:21,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-28 10:40:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-28 10:40:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-28 10:40:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-28 10:40:21,510 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-09-28 10:40:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:21,510 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-28 10:40:21,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-28 10:40:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-28 10:40:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-28 10:40:21,511 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:21,511 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:21,512 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:21,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:21,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-09-28 10:40:21,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:21,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:21,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:21,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:21,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:21,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:21,878 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 [2018-09-28 10:40:21,886 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:21,934 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:21,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:21,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:22,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:22,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-28 10:40:22,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-28 10:40:22,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-28 10:40:22,691 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:22,691 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-09-28 10:40:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:23,238 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-28 10:40:23,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-28 10:40:23,239 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-28 10:40:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:23,241 INFO L225 Difference]: With dead ends: 213 [2018-09-28 10:40:23,241 INFO L226 Difference]: Without dead ends: 211 [2018-09-28 10:40:23,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-28 10:40:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-28 10:40:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-28 10:40:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-28 10:40:23,244 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-09-28 10:40:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:23,245 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-28 10:40:23,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-28 10:40:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-28 10:40:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-28 10:40:23,246 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:23,246 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:23,246 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:23,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-09-28 10:40:23,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:23,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:23,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:23,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:23,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:23,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:23,606 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 [2018-09-28 10:40:23,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:23,687 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-28 10:40:23,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:23,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:24,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:24,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-28 10:40:24,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-28 10:40:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-28 10:40:24,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:24,406 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-09-28 10:40:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:24,862 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-28 10:40:24,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-28 10:40:24,862 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-28 10:40:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:24,863 INFO L225 Difference]: With dead ends: 217 [2018-09-28 10:40:24,863 INFO L226 Difference]: Without dead ends: 215 [2018-09-28 10:40:24,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-28 10:40:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-28 10:40:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-28 10:40:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-28 10:40:24,866 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-09-28 10:40:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:24,866 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-28 10:40:24,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-28 10:40:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-28 10:40:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-28 10:40:24,867 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:24,867 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:24,868 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:24,868 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-09-28 10:40:24,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:24,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:24,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:24,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:24,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:25,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:25,397 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:25,405 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:25,443 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:25,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:25,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:25,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:25,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-28 10:40:25,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-28 10:40:25,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-28 10:40:25,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:25,928 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-09-28 10:40:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:26,405 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-28 10:40:26,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-28 10:40:26,405 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-28 10:40:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:26,406 INFO L225 Difference]: With dead ends: 221 [2018-09-28 10:40:26,407 INFO L226 Difference]: Without dead ends: 219 [2018-09-28 10:40:26,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-28 10:40:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-28 10:40:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-28 10:40:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-28 10:40:26,409 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-09-28 10:40:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:26,410 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-28 10:40:26,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-28 10:40:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-28 10:40:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-28 10:40:26,410 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:26,411 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:26,411 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:26,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-09-28 10:40:26,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:26,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:26,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:26,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:26,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:27,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:27,037 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 [2018-09-28 10:40:27,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:27,125 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-28 10:40:27,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:27,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:27,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:27,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-28 10:40:27,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-28 10:40:27,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-28 10:40:27,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:27,538 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-09-28 10:40:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:28,197 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-09-28 10:40:28,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-28 10:40:28,198 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-28 10:40:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:28,199 INFO L225 Difference]: With dead ends: 225 [2018-09-28 10:40:28,199 INFO L226 Difference]: Without dead ends: 223 [2018-09-28 10:40:28,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-28 10:40:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-28 10:40:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-28 10:40:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-09-28 10:40:28,202 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-09-28 10:40:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:28,202 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-09-28 10:40:28,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-28 10:40:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-09-28 10:40:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-28 10:40:28,203 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:28,204 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:28,204 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:28,204 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-09-28 10:40:28,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:28,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:28,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:28,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:28,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:28,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:28,623 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 [2018-09-28 10:40:28,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:28,697 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-28 10:40:28,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:28,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:29,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:29,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-28 10:40:29,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-28 10:40:29,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-28 10:40:29,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:29,170 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-09-28 10:40:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:29,676 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-09-28 10:40:29,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-28 10:40:29,676 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-28 10:40:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:29,677 INFO L225 Difference]: With dead ends: 229 [2018-09-28 10:40:29,677 INFO L226 Difference]: Without dead ends: 227 [2018-09-28 10:40:29,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-28 10:40:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-28 10:40:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-28 10:40:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-09-28 10:40:29,680 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-09-28 10:40:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:29,680 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-09-28 10:40:29,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-28 10:40:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-09-28 10:40:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-28 10:40:29,681 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:29,682 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:29,682 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:29,682 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-09-28 10:40:29,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:29,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:29,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:29,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:29,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:30,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:30,033 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 [2018-09-28 10:40:30,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:30,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:30,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:30,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-28 10:40:30,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-28 10:40:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-28 10:40:30,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:30,487 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-09-28 10:40:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:31,050 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-09-28 10:40:31,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-28 10:40:31,050 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-28 10:40:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:31,051 INFO L225 Difference]: With dead ends: 233 [2018-09-28 10:40:31,051 INFO L226 Difference]: Without dead ends: 231 [2018-09-28 10:40:31,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-28 10:40:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-28 10:40:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-28 10:40:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-09-28 10:40:31,054 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-09-28 10:40:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:31,055 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-09-28 10:40:31,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-28 10:40:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-09-28 10:40:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-28 10:40:31,056 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:31,056 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:31,056 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:31,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:31,057 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-09-28 10:40:31,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:31,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:31,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:31,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:31,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:31,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:31,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:31,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:31,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:31,964 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:31,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-28 10:40:31,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-28 10:40:31,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-28 10:40:31,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:31,966 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-09-28 10:40:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:32,548 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-09-28 10:40:32,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-28 10:40:32,548 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-28 10:40:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:32,549 INFO L225 Difference]: With dead ends: 237 [2018-09-28 10:40:32,549 INFO L226 Difference]: Without dead ends: 235 [2018-09-28 10:40:32,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-28 10:40:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-28 10:40:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-28 10:40:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-09-28 10:40:32,552 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-09-28 10:40:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:32,552 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-09-28 10:40:32,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-28 10:40:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-09-28 10:40:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-28 10:40:32,553 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:32,553 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:32,553 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:32,553 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:32,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-09-28 10:40:32,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:32,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:32,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:32,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:32,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:32,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:32,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:32,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:33,064 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-28 10:40:33,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:33,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:33,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:33,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-28 10:40:33,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-28 10:40:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-28 10:40:33,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:33,638 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-09-28 10:40:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:34,135 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-09-28 10:40:34,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-28 10:40:34,135 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-28 10:40:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:34,136 INFO L225 Difference]: With dead ends: 241 [2018-09-28 10:40:34,136 INFO L226 Difference]: Without dead ends: 239 [2018-09-28 10:40:34,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-28 10:40:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-28 10:40:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-28 10:40:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-09-28 10:40:34,139 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-09-28 10:40:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:34,139 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-09-28 10:40:34,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-28 10:40:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-09-28 10:40:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-28 10:40:34,140 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:34,140 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:34,140 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:34,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-09-28 10:40:34,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:34,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:34,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:34,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:34,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:34,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:34,466 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 [2018-09-28 10:40:34,476 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:34,518 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:34,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:34,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:35,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:35,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-28 10:40:35,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-28 10:40:35,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-28 10:40:35,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:35,010 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-09-28 10:40:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:35,518 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-09-28 10:40:35,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-28 10:40:35,518 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-28 10:40:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:35,519 INFO L225 Difference]: With dead ends: 245 [2018-09-28 10:40:35,519 INFO L226 Difference]: Without dead ends: 243 [2018-09-28 10:40:35,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-28 10:40:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-28 10:40:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-28 10:40:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-09-28 10:40:35,522 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-09-28 10:40:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:35,522 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-09-28 10:40:35,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-28 10:40:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-09-28 10:40:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-28 10:40:35,523 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:35,523 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:35,523 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:35,524 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-09-28 10:40:35,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:35,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:35,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:35,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:35,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:35,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:35,867 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 [2018-09-28 10:40:35,874 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:35,951 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-28 10:40:35,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:35,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:36,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:36,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-28 10:40:36,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-28 10:40:36,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-28 10:40:36,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:36,361 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-09-28 10:40:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:36,970 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-09-28 10:40:36,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-28 10:40:36,971 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-28 10:40:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:36,972 INFO L225 Difference]: With dead ends: 249 [2018-09-28 10:40:36,972 INFO L226 Difference]: Without dead ends: 247 [2018-09-28 10:40:36,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-28 10:40:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-28 10:40:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-28 10:40:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-09-28 10:40:36,977 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-09-28 10:40:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:36,978 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-09-28 10:40:36,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-28 10:40:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-09-28 10:40:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-28 10:40:36,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:36,980 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:36,980 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:36,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:36,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-09-28 10:40:36,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:36,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:36,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:36,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:36,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:37,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:37,387 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 [2018-09-28 10:40:37,395 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:37,474 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-28 10:40:37,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:37,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:37,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:37,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-28 10:40:37,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-28 10:40:37,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-28 10:40:37,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:37,911 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-09-28 10:40:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:38,624 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-09-28 10:40:38,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-28 10:40:38,624 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-28 10:40:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:38,626 INFO L225 Difference]: With dead ends: 253 [2018-09-28 10:40:38,626 INFO L226 Difference]: Without dead ends: 251 [2018-09-28 10:40:38,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-28 10:40:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-28 10:40:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-28 10:40:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-09-28 10:40:38,628 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-09-28 10:40:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:38,628 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-09-28 10:40:38,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-28 10:40:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-09-28 10:40:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-28 10:40:38,629 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:38,629 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:38,630 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:38,630 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-09-28 10:40:38,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:38,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:38,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:38,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:38,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:39,102 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:39,102 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 [2018-09-28 10:40:39,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:39,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:39,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:39,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-28 10:40:39,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-28 10:40:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-28 10:40:39,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:39,586 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-09-28 10:40:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:40,176 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-09-28 10:40:40,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-28 10:40:40,176 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-28 10:40:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:40,177 INFO L225 Difference]: With dead ends: 257 [2018-09-28 10:40:40,177 INFO L226 Difference]: Without dead ends: 255 [2018-09-28 10:40:40,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-28 10:40:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-28 10:40:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-28 10:40:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-09-28 10:40:40,180 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-09-28 10:40:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:40,180 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-09-28 10:40:40,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-28 10:40:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-09-28 10:40:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-28 10:40:40,181 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:40,181 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:40,181 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:40,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:40,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-09-28 10:40:40,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:40,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:40,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:40,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:40,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:40,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:40,578 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 [2018-09-28 10:40:40,585 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:40,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:40,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:40,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:41,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:41,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-28 10:40:41,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-28 10:40:41,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-28 10:40:41,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:41,140 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-09-28 10:40:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:41,689 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-09-28 10:40:41,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:40:41,689 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-28 10:40:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:41,690 INFO L225 Difference]: With dead ends: 261 [2018-09-28 10:40:41,690 INFO L226 Difference]: Without dead ends: 259 [2018-09-28 10:40:41,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-28 10:40:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-28 10:40:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-28 10:40:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-09-28 10:40:41,693 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-09-28 10:40:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:41,693 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-09-28 10:40:41,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-28 10:40:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-09-28 10:40:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-28 10:40:41,695 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:41,695 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:41,695 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:41,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-09-28 10:40:41,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:41,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:41,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:42,066 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:42,066 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 [2018-09-28 10:40:42,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:42,164 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-28 10:40:42,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:42,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:42,611 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:42,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-28 10:40:42,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-28 10:40:42,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-28 10:40:42,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:42,613 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-09-28 10:40:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:43,206 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-09-28 10:40:43,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-28 10:40:43,206 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-28 10:40:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:43,208 INFO L225 Difference]: With dead ends: 265 [2018-09-28 10:40:43,208 INFO L226 Difference]: Without dead ends: 263 [2018-09-28 10:40:43,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-28 10:40:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-28 10:40:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-28 10:40:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-09-28 10:40:43,212 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-09-28 10:40:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:43,212 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-09-28 10:40:43,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-28 10:40:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-09-28 10:40:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-28 10:40:43,214 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:43,214 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:43,215 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:43,215 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-09-28 10:40:43,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:43,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:43,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:43,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:43,911 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 [2018-09-28 10:40:43,919 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:43,970 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:43,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:43,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:44,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:44,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-28 10:40:44,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-28 10:40:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-28 10:40:44,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:44,419 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-09-28 10:40:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:45,014 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-09-28 10:40:45,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-28 10:40:45,014 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-28 10:40:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:45,015 INFO L225 Difference]: With dead ends: 269 [2018-09-28 10:40:45,015 INFO L226 Difference]: Without dead ends: 267 [2018-09-28 10:40:45,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-28 10:40:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-28 10:40:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-28 10:40:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-09-28 10:40:45,019 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-09-28 10:40:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:45,019 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-09-28 10:40:45,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-28 10:40:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-09-28 10:40:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-28 10:40:45,020 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:45,020 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:45,021 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:45,021 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-09-28 10:40:45,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:45,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:45,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:45,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:45,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:45,454 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:45,543 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-28 10:40:45,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:45,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:46,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:46,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-28 10:40:46,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-28 10:40:46,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-28 10:40:46,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:46,027 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-09-28 10:40:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:46,812 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-09-28 10:40:46,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-28 10:40:46,813 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-28 10:40:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:46,814 INFO L225 Difference]: With dead ends: 273 [2018-09-28 10:40:46,814 INFO L226 Difference]: Without dead ends: 271 [2018-09-28 10:40:46,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-28 10:40:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-28 10:40:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-28 10:40:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-09-28 10:40:46,818 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-09-28 10:40:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:46,818 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-09-28 10:40:46,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-28 10:40:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-09-28 10:40:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-28 10:40:46,819 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:46,820 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:46,820 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:46,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-09-28 10:40:46,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:46,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:46,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:46,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:46,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:47,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:47,247 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 [2018-09-28 10:40:47,255 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:47,344 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-28 10:40:47,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:47,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:47,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:47,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-28 10:40:47,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-28 10:40:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-28 10:40:47,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:47,837 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-09-28 10:40:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:48,559 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-09-28 10:40:48,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-28 10:40:48,559 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-28 10:40:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:48,560 INFO L225 Difference]: With dead ends: 277 [2018-09-28 10:40:48,560 INFO L226 Difference]: Without dead ends: 275 [2018-09-28 10:40:48,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-28 10:40:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-28 10:40:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-28 10:40:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-09-28 10:40:48,563 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-09-28 10:40:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:48,563 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-09-28 10:40:48,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-28 10:40:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-09-28 10:40:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-28 10:40:48,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:48,565 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:48,565 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:48,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-09-28 10:40:48,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:48,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:48,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:48,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:48,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:49,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:49,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:49,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:49,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:49,624 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:49,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-28 10:40:49,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-28 10:40:49,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-28 10:40:49,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:49,626 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-09-28 10:40:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:50,296 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-09-28 10:40:50,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-28 10:40:50,296 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-28 10:40:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:50,297 INFO L225 Difference]: With dead ends: 281 [2018-09-28 10:40:50,297 INFO L226 Difference]: Without dead ends: 279 [2018-09-28 10:40:50,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-28 10:40:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-28 10:40:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-28 10:40:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-09-28 10:40:50,301 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-09-28 10:40:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:50,301 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-09-28 10:40:50,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-28 10:40:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-09-28 10:40:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-28 10:40:50,302 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:50,303 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:50,303 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:50,303 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-09-28 10:40:50,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:50,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:50,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:40:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:50,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:50,731 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 [2018-09-28 10:40:50,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:40:50,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:40:50,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:50,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:51,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:51,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-28 10:40:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-28 10:40:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-28 10:40:51,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:51,325 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-09-28 10:40:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:52,008 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-09-28 10:40:52,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-28 10:40:52,009 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-28 10:40:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:52,010 INFO L225 Difference]: With dead ends: 285 [2018-09-28 10:40:52,010 INFO L226 Difference]: Without dead ends: 283 [2018-09-28 10:40:52,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-28 10:40:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-28 10:40:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-28 10:40:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-09-28 10:40:52,012 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-09-28 10:40:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:52,013 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-09-28 10:40:52,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-28 10:40:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-09-28 10:40:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-28 10:40:52,014 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:52,014 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:52,014 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:52,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-09-28 10:40:52,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:52,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:52,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:52,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:52,526 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 [2018-09-28 10:40:52,533 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:40:52,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-28 10:40:52,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:52,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:53,402 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:53,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-28 10:40:53,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-28 10:40:53,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-28 10:40:53,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:53,404 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-09-28 10:40:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:54,116 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-09-28 10:40:54,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-28 10:40:54,116 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-28 10:40:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:54,117 INFO L225 Difference]: With dead ends: 289 [2018-09-28 10:40:54,117 INFO L226 Difference]: Without dead ends: 287 [2018-09-28 10:40:54,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-28 10:40:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-28 10:40:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-28 10:40:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-09-28 10:40:54,120 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-09-28 10:40:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:54,120 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-09-28 10:40:54,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-28 10:40:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-09-28 10:40:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-28 10:40:54,121 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:54,121 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:54,122 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:54,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-09-28 10:40:54,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:54,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:54,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:54,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:54,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:54,542 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:40:54,594 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:40:54,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:54,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:55,101 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:55,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-28 10:40:55,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-28 10:40:55,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-28 10:40:55,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:55,102 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-09-28 10:40:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:55,925 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-09-28 10:40:55,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-28 10:40:55,925 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-28 10:40:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:55,926 INFO L225 Difference]: With dead ends: 293 [2018-09-28 10:40:55,926 INFO L226 Difference]: Without dead ends: 291 [2018-09-28 10:40:55,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-28 10:40:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-28 10:40:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-28 10:40:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-09-28 10:40:55,929 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-09-28 10:40:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:55,930 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-09-28 10:40:55,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-28 10:40:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-09-28 10:40:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-28 10:40:55,931 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:55,931 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:55,931 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:55,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-09-28 10:40:55,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:55,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:55,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:55,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:55,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:56,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:56,402 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:56,419 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:40:56,523 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-28 10:40:56,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:56,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:57,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:57,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-28 10:40:57,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-28 10:40:57,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-28 10:40:57,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:57,057 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-09-28 10:40:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:57,733 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-09-28 10:40:57,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-28 10:40:57,734 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-28 10:40:57,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:57,735 INFO L225 Difference]: With dead ends: 297 [2018-09-28 10:40:57,735 INFO L226 Difference]: Without dead ends: 295 [2018-09-28 10:40:57,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-28 10:40:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-28 10:40:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-28 10:40:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-09-28 10:40:57,739 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-09-28 10:40:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:57,739 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-09-28 10:40:57,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-28 10:40:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-09-28 10:40:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-28 10:40:57,740 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:57,741 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:57,741 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:57,741 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-09-28 10:40:57,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:57,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:57,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:57,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:57,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:40:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:58,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:40:58,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:40:58,200 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:40:58,301 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-28 10:40:58,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:40:58,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:40:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:40:58,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:40:58,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-28 10:40:58,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-28 10:40:58,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-28 10:40:58,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:40:58,947 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-09-28 10:40:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:40:59,708 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-09-28 10:40:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-28 10:40:59,708 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-28 10:40:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:40:59,709 INFO L225 Difference]: With dead ends: 301 [2018-09-28 10:40:59,709 INFO L226 Difference]: Without dead ends: 299 [2018-09-28 10:40:59,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:40:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-28 10:40:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-28 10:40:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-28 10:40:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-09-28 10:40:59,712 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-09-28 10:40:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:40:59,712 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-09-28 10:40:59,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-28 10:40:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-09-28 10:40:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-28 10:40:59,713 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:40:59,713 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-09-28 10:40:59,714 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:40:59,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:40:59,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-09-28 10:40:59,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:40:59,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:40:59,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:59,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:40:59,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:40:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:00,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:00,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:00,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:00,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:00,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:00,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-28 10:41:00,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-28 10:41:00,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-28 10:41:00,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:00,829 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-09-28 10:41:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:01,618 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-09-28 10:41:01,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-28 10:41:01,618 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-28 10:41:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:01,619 INFO L225 Difference]: With dead ends: 305 [2018-09-28 10:41:01,619 INFO L226 Difference]: Without dead ends: 303 [2018-09-28 10:41:01,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-28 10:41:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-28 10:41:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-28 10:41:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-09-28 10:41:01,622 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-09-28 10:41:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:01,623 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-09-28 10:41:01,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-28 10:41:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-09-28 10:41:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-28 10:41:01,624 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:01,625 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:01,625 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:01,625 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-09-28 10:41:01,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:01,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:01,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:01,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:01,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:02,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:02,109 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 [2018-09-28 10:41:02,116 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:41:02,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:41:02,174 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:02,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:02,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:02,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-28 10:41:02,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-28 10:41:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-28 10:41:02,747 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:02,747 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-09-28 10:41:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:03,512 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-09-28 10:41:03,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-28 10:41:03,513 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-28 10:41:03,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:03,514 INFO L225 Difference]: With dead ends: 309 [2018-09-28 10:41:03,514 INFO L226 Difference]: Without dead ends: 307 [2018-09-28 10:41:03,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-28 10:41:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-28 10:41:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-28 10:41:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-09-28 10:41:03,517 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-09-28 10:41:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:03,517 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-09-28 10:41:03,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-28 10:41:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-09-28 10:41:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-28 10:41:03,518 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:03,518 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:03,518 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:03,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-09-28 10:41:03,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:03,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:03,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:03,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:03,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:04,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:04,214 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 [2018-09-28 10:41:04,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:41:04,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-28 10:41:04,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:04,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:04,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:04,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-28 10:41:04,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-28 10:41:04,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-28 10:41:04,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:04,886 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-09-28 10:41:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:05,840 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-09-28 10:41:05,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-28 10:41:05,840 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-28 10:41:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:05,842 INFO L225 Difference]: With dead ends: 313 [2018-09-28 10:41:05,842 INFO L226 Difference]: Without dead ends: 311 [2018-09-28 10:41:05,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-28 10:41:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-28 10:41:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-28 10:41:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-09-28 10:41:05,846 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-09-28 10:41:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:05,846 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-09-28 10:41:05,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-28 10:41:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-09-28 10:41:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-28 10:41:05,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:05,848 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:05,848 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:05,848 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-09-28 10:41:05,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:05,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:05,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:05,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:05,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:06,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:06,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:06,328 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:41:06,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:41:06,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:06,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:06,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:06,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-28 10:41:06,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-28 10:41:06,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-28 10:41:06,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:06,940 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-09-28 10:41:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:07,733 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-09-28 10:41:07,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-28 10:41:07,733 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-28 10:41:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:07,735 INFO L225 Difference]: With dead ends: 317 [2018-09-28 10:41:07,735 INFO L226 Difference]: Without dead ends: 315 [2018-09-28 10:41:07,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-28 10:41:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-28 10:41:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-28 10:41:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-09-28 10:41:07,737 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-09-28 10:41:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:07,738 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-09-28 10:41:07,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-28 10:41:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-09-28 10:41:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-28 10:41:07,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:07,739 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:07,739 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:07,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:07,739 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-09-28 10:41:07,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:07,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:07,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:07,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:07,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:08,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:08,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:08,237 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:41:08,351 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-28 10:41:08,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:08,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:08,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:08,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-28 10:41:08,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-28 10:41:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-28 10:41:08,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:08,928 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-09-28 10:41:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:09,865 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-09-28 10:41:09,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-28 10:41:09,865 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-28 10:41:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:09,867 INFO L225 Difference]: With dead ends: 321 [2018-09-28 10:41:09,867 INFO L226 Difference]: Without dead ends: 319 [2018-09-28 10:41:09,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-28 10:41:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-28 10:41:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-28 10:41:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-09-28 10:41:09,869 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-09-28 10:41:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:09,870 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-09-28 10:41:09,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-28 10:41:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-09-28 10:41:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-28 10:41:09,871 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:09,871 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:09,871 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:09,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-09-28 10:41:09,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:09,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:09,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:09,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:09,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:10,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:10,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:10,361 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:41:10,479 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-28 10:41:10,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:10,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:11,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:11,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-28 10:41:11,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-28 10:41:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-28 10:41:11,052 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:11,052 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-09-28 10:41:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:11,972 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-09-28 10:41:11,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-28 10:41:11,972 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-28 10:41:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:11,973 INFO L225 Difference]: With dead ends: 325 [2018-09-28 10:41:11,973 INFO L226 Difference]: Without dead ends: 323 [2018-09-28 10:41:11,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-28 10:41:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-28 10:41:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-28 10:41:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-09-28 10:41:11,976 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-09-28 10:41:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:11,976 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-09-28 10:41:11,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-28 10:41:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-09-28 10:41:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-28 10:41:11,977 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:11,978 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:11,978 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:11,978 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:11,978 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-09-28 10:41:11,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:11,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:11,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:11,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:11,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:12,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:12,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:12,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:12,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:13,152 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:13,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-28 10:41:13,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-28 10:41:13,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-28 10:41:13,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:13,154 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-09-28 10:41:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:14,155 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-09-28 10:41:14,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-28 10:41:14,155 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-28 10:41:14,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:14,156 INFO L225 Difference]: With dead ends: 329 [2018-09-28 10:41:14,156 INFO L226 Difference]: Without dead ends: 327 [2018-09-28 10:41:14,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-28 10:41:14,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-28 10:41:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-28 10:41:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-09-28 10:41:14,159 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-09-28 10:41:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:14,159 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-09-28 10:41:14,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-28 10:41:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-09-28 10:41:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-28 10:41:14,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:14,161 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:14,161 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:14,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-09-28 10:41:14,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:14,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:14,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:14,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:14,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:14,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:14,725 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 [2018-09-28 10:41:14,732 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:41:14,791 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:41:14,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:14,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:15,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:15,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-28 10:41:15,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-28 10:41:15,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-28 10:41:15,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:15,375 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-09-28 10:41:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:16,438 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-09-28 10:41:16,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-28 10:41:16,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-28 10:41:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:16,439 INFO L225 Difference]: With dead ends: 333 [2018-09-28 10:41:16,439 INFO L226 Difference]: Without dead ends: 331 [2018-09-28 10:41:16,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-28 10:41:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-28 10:41:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-28 10:41:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-09-28 10:41:16,442 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-09-28 10:41:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:16,442 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-09-28 10:41:16,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-28 10:41:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-09-28 10:41:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-28 10:41:16,443 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:16,444 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:16,444 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:16,444 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:16,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-09-28 10:41:16,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:16,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:16,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:16,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:16,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:16,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:16,962 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:16,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:41:17,105 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-28 10:41:17,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:17,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:17,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:17,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-28 10:41:17,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-28 10:41:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-28 10:41:17,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:17,718 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-09-28 10:41:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:20,336 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-09-28 10:41:20,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-28 10:41:20,336 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-28 10:41:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:20,338 INFO L225 Difference]: With dead ends: 337 [2018-09-28 10:41:20,338 INFO L226 Difference]: Without dead ends: 335 [2018-09-28 10:41:20,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-28 10:41:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-28 10:41:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-28 10:41:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-09-28 10:41:20,342 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-09-28 10:41:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:20,343 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-09-28 10:41:20,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-28 10:41:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-09-28 10:41:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-28 10:41:20,345 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:20,345 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:20,345 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:20,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:20,346 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-09-28 10:41:20,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:20,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:20,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:20,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:20,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:21,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:21,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:21,552 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:41:21,614 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:41:21,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:21,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:22,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:22,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-28 10:41:22,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-28 10:41:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-28 10:41:22,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:22,343 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-09-28 10:41:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:23,327 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-09-28 10:41:23,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-28 10:41:23,327 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-28 10:41:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:23,328 INFO L225 Difference]: With dead ends: 341 [2018-09-28 10:41:23,328 INFO L226 Difference]: Without dead ends: 339 [2018-09-28 10:41:23,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-28 10:41:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-28 10:41:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-28 10:41:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-09-28 10:41:23,331 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-09-28 10:41:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:23,332 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-09-28 10:41:23,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-28 10:41:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-09-28 10:41:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-28 10:41:23,333 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:23,333 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:23,333 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:23,333 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-09-28 10:41:23,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:23,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:23,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:23,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:23,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:23,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:23,884 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:23,895 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:41:24,029 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-28 10:41:24,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:24,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:24,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:24,887 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-28 10:41:24,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-28 10:41:24,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-28 10:41:24,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:24,890 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-09-28 10:41:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:25,869 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-09-28 10:41:25,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-28 10:41:25,869 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-28 10:41:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:25,871 INFO L225 Difference]: With dead ends: 345 [2018-09-28 10:41:25,871 INFO L226 Difference]: Without dead ends: 343 [2018-09-28 10:41:25,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-28 10:41:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-28 10:41:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-28 10:41:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-09-28 10:41:25,874 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-09-28 10:41:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:25,875 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-09-28 10:41:25,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-28 10:41:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-09-28 10:41:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-28 10:41:25,877 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:25,877 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:25,877 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:25,877 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-09-28 10:41:25,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:25,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:25,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:25,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:25,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:26,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:26,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:26,435 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:41:26,566 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-28 10:41:26,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:26,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:27,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:27,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-28 10:41:27,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-28 10:41:27,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-28 10:41:27,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:27,202 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-09-28 10:41:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:28,278 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-09-28 10:41:28,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-28 10:41:28,279 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-28 10:41:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:28,280 INFO L225 Difference]: With dead ends: 349 [2018-09-28 10:41:28,280 INFO L226 Difference]: Without dead ends: 347 [2018-09-28 10:41:28,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-28 10:41:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-28 10:41:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-28 10:41:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-09-28 10:41:28,284 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-09-28 10:41:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:28,284 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-09-28 10:41:28,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-28 10:41:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-09-28 10:41:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-28 10:41:28,286 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:28,286 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:28,286 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:28,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-09-28 10:41:28,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:28,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:28,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:28,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:28,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:28,844 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:28,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:28,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:28,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:29,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:29,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-28 10:41:29,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-28 10:41:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-28 10:41:29,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:29,647 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-09-28 10:41:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:30,823 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-09-28 10:41:30,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-28 10:41:30,824 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-28 10:41:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:30,825 INFO L225 Difference]: With dead ends: 353 [2018-09-28 10:41:30,825 INFO L226 Difference]: Without dead ends: 351 [2018-09-28 10:41:30,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-28 10:41:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-28 10:41:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-28 10:41:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-09-28 10:41:30,828 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-09-28 10:41:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:30,828 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-09-28 10:41:30,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-28 10:41:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-09-28 10:41:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-28 10:41:30,830 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:30,830 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:30,830 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:30,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:30,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-09-28 10:41:30,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:30,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:30,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:30,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:30,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:31,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:31,443 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 [2018-09-28 10:41:31,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:41:31,516 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:41:31,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:31,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:32,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:32,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-28 10:41:32,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-28 10:41:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-28 10:41:32,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:32,214 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-09-28 10:41:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:33,412 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-09-28 10:41:33,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-28 10:41:33,412 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-28 10:41:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:33,413 INFO L225 Difference]: With dead ends: 357 [2018-09-28 10:41:33,414 INFO L226 Difference]: Without dead ends: 355 [2018-09-28 10:41:33,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-28 10:41:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-28 10:41:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-28 10:41:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-09-28 10:41:33,417 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-09-28 10:41:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:33,417 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-09-28 10:41:33,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-28 10:41:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-09-28 10:41:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-28 10:41:33,418 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:33,418 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:33,419 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:33,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-09-28 10:41:33,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:33,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:33,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:33,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:34,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:34,007 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:34,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:41:34,151 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-28 10:41:34,152 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:34,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:35,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:35,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-28 10:41:35,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-28 10:41:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-28 10:41:35,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:35,027 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-09-28 10:41:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:36,128 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-09-28 10:41:36,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-28 10:41:36,128 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-28 10:41:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:36,130 INFO L225 Difference]: With dead ends: 361 [2018-09-28 10:41:36,130 INFO L226 Difference]: Without dead ends: 359 [2018-09-28 10:41:36,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-28 10:41:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-28 10:41:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-28 10:41:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-09-28 10:41:36,133 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-09-28 10:41:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:36,133 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-09-28 10:41:36,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-28 10:41:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-09-28 10:41:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-28 10:41:36,134 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:36,135 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:36,135 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:36,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:36,135 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-09-28 10:41:36,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:36,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:36,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:36,723 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:36,724 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 [2018-09-28 10:41:36,731 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:41:36,811 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:41:36,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:36,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:37,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:37,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-28 10:41:37,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-28 10:41:37,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-28 10:41:37,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:37,522 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-09-28 10:41:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:38,697 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-09-28 10:41:38,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-28 10:41:38,697 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-28 10:41:38,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:38,698 INFO L225 Difference]: With dead ends: 365 [2018-09-28 10:41:38,699 INFO L226 Difference]: Without dead ends: 363 [2018-09-28 10:41:38,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-28 10:41:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-28 10:41:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-28 10:41:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-09-28 10:41:38,701 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-09-28 10:41:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:38,702 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-09-28 10:41:38,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-28 10:41:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-09-28 10:41:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-28 10:41:38,703 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:38,703 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:38,703 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:38,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-09-28 10:41:38,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:38,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:38,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:38,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:38,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:39,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:39,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:39,315 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:41:39,461 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-28 10:41:39,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:39,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:40,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:40,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-28 10:41:40,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-28 10:41:40,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-28 10:41:40,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:40,399 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-09-28 10:41:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:41,721 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-09-28 10:41:41,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-28 10:41:41,721 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-28 10:41:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:41,722 INFO L225 Difference]: With dead ends: 369 [2018-09-28 10:41:41,722 INFO L226 Difference]: Without dead ends: 367 [2018-09-28 10:41:41,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-28 10:41:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-28 10:41:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-28 10:41:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-09-28 10:41:41,725 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-09-28 10:41:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:41,725 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-09-28 10:41:41,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-28 10:41:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-09-28 10:41:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-28 10:41:41,727 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:41,727 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:41,727 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:41,727 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:41,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-09-28 10:41:41,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:41,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:41,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:41,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:41,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:42,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:42,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:42,355 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:41:42,536 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-28 10:41:42,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:42,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:43,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:43,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-28 10:41:43,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-28 10:41:43,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-28 10:41:43,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:43,204 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-09-28 10:41:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:44,359 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-09-28 10:41:44,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-28 10:41:44,359 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-28 10:41:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:44,361 INFO L225 Difference]: With dead ends: 373 [2018-09-28 10:41:44,361 INFO L226 Difference]: Without dead ends: 371 [2018-09-28 10:41:44,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-28 10:41:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-28 10:41:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-28 10:41:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-09-28 10:41:44,364 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-09-28 10:41:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:44,364 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-09-28 10:41:44,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-28 10:41:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-09-28 10:41:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-28 10:41:44,366 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:44,366 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:44,366 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:44,366 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-09-28 10:41:44,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:44,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:44,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:44,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:44,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:45,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:45,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:45,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:45,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:45,899 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:45,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-28 10:41:45,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-28 10:41:45,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-28 10:41:45,901 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:45,901 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-09-28 10:41:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:47,259 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-09-28 10:41:47,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-28 10:41:47,260 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-28 10:41:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:47,261 INFO L225 Difference]: With dead ends: 377 [2018-09-28 10:41:47,261 INFO L226 Difference]: Without dead ends: 375 [2018-09-28 10:41:47,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-28 10:41:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-28 10:41:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-28 10:41:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-09-28 10:41:47,264 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-09-28 10:41:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:47,264 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-09-28 10:41:47,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-28 10:41:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-09-28 10:41:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-28 10:41:47,266 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:47,266 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:47,266 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:47,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-09-28 10:41:47,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:47,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:47,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:41:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:47,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:47,909 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 [2018-09-28 10:41:47,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:41:47,988 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:41:47,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:47,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:48,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:48,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-28 10:41:48,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-28 10:41:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-28 10:41:48,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:48,718 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-09-28 10:41:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:50,246 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-09-28 10:41:50,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-28 10:41:50,246 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-28 10:41:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:50,248 INFO L225 Difference]: With dead ends: 381 [2018-09-28 10:41:50,248 INFO L226 Difference]: Without dead ends: 379 [2018-09-28 10:41:50,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-28 10:41:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-28 10:41:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-28 10:41:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-09-28 10:41:50,251 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-09-28 10:41:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:50,251 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-09-28 10:41:50,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-28 10:41:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-09-28 10:41:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-28 10:41:50,253 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:50,253 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:50,253 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:50,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-09-28 10:41:50,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:50,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:50,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:51,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:51,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:51,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:41:51,190 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-28 10:41:51,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:51,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:51,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:51,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-28 10:41:51,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-28 10:41:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-28 10:41:51,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:51,909 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-09-28 10:41:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:53,380 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-09-28 10:41:53,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-28 10:41:53,380 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-28 10:41:53,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:53,381 INFO L225 Difference]: With dead ends: 385 [2018-09-28 10:41:53,381 INFO L226 Difference]: Without dead ends: 383 [2018-09-28 10:41:53,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-28 10:41:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-28 10:41:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-28 10:41:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-09-28 10:41:53,384 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-09-28 10:41:53,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:53,385 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-09-28 10:41:53,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-28 10:41:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-09-28 10:41:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-28 10:41:53,386 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:53,386 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:53,387 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:53,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-09-28 10:41:53,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:53,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:53,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:53,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:53,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:54,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:54,100 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 [2018-09-28 10:41:54,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:41:54,179 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:41:54,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:54,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:54,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:54,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-28 10:41:54,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-28 10:41:54,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-28 10:41:54,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:54,937 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-09-28 10:41:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:56,309 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-09-28 10:41:56,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-28 10:41:56,310 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-28 10:41:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:56,311 INFO L225 Difference]: With dead ends: 389 [2018-09-28 10:41:56,311 INFO L226 Difference]: Without dead ends: 387 [2018-09-28 10:41:56,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-28 10:41:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-28 10:41:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-28 10:41:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-09-28 10:41:56,315 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-09-28 10:41:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:56,315 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-09-28 10:41:56,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-28 10:41:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-09-28 10:41:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-28 10:41:56,317 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:56,317 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:56,317 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:56,317 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:56,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-09-28 10:41:56,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:56,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:56,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:56,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:56,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:41:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:57,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:41:57,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:41:57,018 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:41:57,197 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-28 10:41:57,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:41:57,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:41:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:41:57,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:41:57,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-28 10:41:57,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-28 10:41:57,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-28 10:41:57,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:41:57,911 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-09-28 10:41:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:41:59,312 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-09-28 10:41:59,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-28 10:41:59,312 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-28 10:41:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:41:59,314 INFO L225 Difference]: With dead ends: 393 [2018-09-28 10:41:59,314 INFO L226 Difference]: Without dead ends: 391 [2018-09-28 10:41:59,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:41:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-28 10:41:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-28 10:41:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-28 10:41:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-09-28 10:41:59,317 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-09-28 10:41:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:41:59,317 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-09-28 10:41:59,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-28 10:41:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-09-28 10:41:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-28 10:41:59,319 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:41:59,319 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-09-28 10:41:59,319 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:41:59,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:41:59,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-09-28 10:41:59,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:41:59,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:41:59,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:59,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:41:59,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:41:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:00,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:00,017 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 [2018-09-28 10:42:00,025 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:42:00,204 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-28 10:42:00,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:00,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:01,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:01,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-28 10:42:01,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-28 10:42:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-28 10:42:01,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:01,079 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-09-28 10:42:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:02,469 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-09-28 10:42:02,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-28 10:42:02,469 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-28 10:42:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:02,471 INFO L225 Difference]: With dead ends: 397 [2018-09-28 10:42:02,471 INFO L226 Difference]: Without dead ends: 395 [2018-09-28 10:42:02,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-28 10:42:02,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-28 10:42:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-28 10:42:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-09-28 10:42:02,474 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-09-28 10:42:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:02,474 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-09-28 10:42:02,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-28 10:42:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-09-28 10:42:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-28 10:42:02,476 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:02,476 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:02,476 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:02,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-09-28 10:42:02,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:02,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:02,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:02,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:02,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:03,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:03,183 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 [2018-09-28 10:42:03,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:03,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:04,027 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:04,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-28 10:42:04,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-28 10:42:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-28 10:42:04,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:04,029 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-09-28 10:42:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:05,619 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-09-28 10:42:05,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-28 10:42:05,619 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-28 10:42:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:05,621 INFO L225 Difference]: With dead ends: 401 [2018-09-28 10:42:05,621 INFO L226 Difference]: Without dead ends: 399 [2018-09-28 10:42:05,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-28 10:42:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-28 10:42:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-28 10:42:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-09-28 10:42:05,624 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-09-28 10:42:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:05,624 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-09-28 10:42:05,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-28 10:42:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-09-28 10:42:05,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-28 10:42:05,626 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:05,626 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:05,626 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:05,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:05,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-09-28 10:42:05,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:05,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:05,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:05,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:05,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:06,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:06,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:06,325 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:42:06,394 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:42:06,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:06,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:07,180 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:07,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-28 10:42:07,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-28 10:42:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-28 10:42:07,182 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:07,182 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-09-28 10:42:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:08,655 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-09-28 10:42:08,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-28 10:42:08,656 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-28 10:42:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:08,657 INFO L225 Difference]: With dead ends: 405 [2018-09-28 10:42:08,657 INFO L226 Difference]: Without dead ends: 403 [2018-09-28 10:42:08,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-28 10:42:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-28 10:42:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-28 10:42:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-09-28 10:42:08,661 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-09-28 10:42:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:08,661 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-09-28 10:42:08,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-28 10:42:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-09-28 10:42:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-28 10:42:08,663 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:08,663 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:08,663 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:08,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-09-28 10:42:08,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:08,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:08,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:08,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:08,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:09,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:09,403 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 [2018-09-28 10:42:09,414 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:42:09,606 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-28 10:42:09,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:09,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:10,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:10,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-28 10:42:10,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-28 10:42:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-28 10:42:10,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:10,378 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-09-28 10:42:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:11,971 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-09-28 10:42:11,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-28 10:42:11,971 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-28 10:42:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:11,972 INFO L225 Difference]: With dead ends: 409 [2018-09-28 10:42:11,972 INFO L226 Difference]: Without dead ends: 407 [2018-09-28 10:42:11,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-28 10:42:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-28 10:42:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-28 10:42:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-09-28 10:42:11,977 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-09-28 10:42:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:11,978 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-09-28 10:42:11,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-28 10:42:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-09-28 10:42:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-28 10:42:11,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:11,980 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:11,980 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:11,981 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:11,981 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-09-28 10:42:11,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:11,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:11,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:11,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:11,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:12,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:12,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:12,841 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:42:12,922 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:42:12,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:12,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:13,710 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:13,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-28 10:42:13,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-28 10:42:13,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-28 10:42:13,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:13,713 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-09-28 10:42:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:15,242 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-09-28 10:42:15,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-28 10:42:15,242 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-28 10:42:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:15,244 INFO L225 Difference]: With dead ends: 413 [2018-09-28 10:42:15,244 INFO L226 Difference]: Without dead ends: 411 [2018-09-28 10:42:15,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-28 10:42:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-28 10:42:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-28 10:42:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-09-28 10:42:15,248 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-09-28 10:42:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:15,249 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-09-28 10:42:15,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-28 10:42:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-09-28 10:42:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-28 10:42:15,251 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:15,251 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:15,251 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:15,252 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:15,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-09-28 10:42:15,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:15,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:15,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:15,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:15,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:16,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:16,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:16,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:42:16,486 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-28 10:42:16,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:16,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:17,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:17,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-28 10:42:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-28 10:42:17,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-28 10:42:17,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:17,386 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-09-28 10:42:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:19,056 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-09-28 10:42:19,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-28 10:42:19,057 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-28 10:42:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:19,058 INFO L225 Difference]: With dead ends: 417 [2018-09-28 10:42:19,058 INFO L226 Difference]: Without dead ends: 415 [2018-09-28 10:42:19,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-28 10:42:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-28 10:42:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-28 10:42:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-09-28 10:42:19,061 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-09-28 10:42:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:19,062 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-09-28 10:42:19,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-28 10:42:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-09-28 10:42:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-28 10:42:19,064 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:19,064 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:19,064 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:19,065 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-09-28 10:42:19,065 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:19,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:19,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:19,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:19,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:19,868 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:19,868 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 [2018-09-28 10:42:19,875 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:42:20,045 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-28 10:42:20,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:20,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:20,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:20,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-28 10:42:20,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-28 10:42:20,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-28 10:42:20,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:20,970 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-09-28 10:42:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:22,675 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-09-28 10:42:22,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-28 10:42:22,675 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-28 10:42:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:22,676 INFO L225 Difference]: With dead ends: 421 [2018-09-28 10:42:22,676 INFO L226 Difference]: Without dead ends: 419 [2018-09-28 10:42:22,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-28 10:42:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-28 10:42:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-28 10:42:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-09-28 10:42:22,679 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-09-28 10:42:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:22,679 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-09-28 10:42:22,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-28 10:42:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-09-28 10:42:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-28 10:42:22,680 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:22,681 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:22,681 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:22,681 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-09-28 10:42:22,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:22,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:22,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:22,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:22,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:23,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:23,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:23,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:23,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:24,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:24,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-28 10:42:24,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-28 10:42:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-28 10:42:24,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:24,399 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-09-28 10:42:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:26,177 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-09-28 10:42:26,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-28 10:42:26,177 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-28 10:42:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:26,178 INFO L225 Difference]: With dead ends: 425 [2018-09-28 10:42:26,178 INFO L226 Difference]: Without dead ends: 423 [2018-09-28 10:42:26,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-28 10:42:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-28 10:42:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-28 10:42:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-09-28 10:42:26,182 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-09-28 10:42:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:26,182 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-09-28 10:42:26,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-28 10:42:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-09-28 10:42:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-28 10:42:26,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:26,184 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:26,184 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:26,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-09-28 10:42:26,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:26,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:26,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:26,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:26,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:26,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:26,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:27,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:42:27,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:42:27,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:27,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:27,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:27,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-28 10:42:27,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-28 10:42:27,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-28 10:42:27,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:27,974 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-09-28 10:42:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:29,720 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-09-28 10:42:29,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-28 10:42:29,721 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-28 10:42:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:29,721 INFO L225 Difference]: With dead ends: 429 [2018-09-28 10:42:29,722 INFO L226 Difference]: Without dead ends: 427 [2018-09-28 10:42:29,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-28 10:42:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-28 10:42:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-28 10:42:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-09-28 10:42:29,724 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-09-28 10:42:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:29,725 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-09-28 10:42:29,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-28 10:42:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-09-28 10:42:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-28 10:42:29,726 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:29,726 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:29,726 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:29,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:29,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-09-28 10:42:29,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:29,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:29,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:29,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:29,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:30,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:30,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:30,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:42:30,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-28 10:42:30,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:30,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:31,888 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:31,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-28 10:42:31,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-28 10:42:31,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-28 10:42:31,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:31,890 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-09-28 10:42:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:33,632 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-09-28 10:42:33,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-28 10:42:33,633 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-28 10:42:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:33,634 INFO L225 Difference]: With dead ends: 433 [2018-09-28 10:42:33,634 INFO L226 Difference]: Without dead ends: 431 [2018-09-28 10:42:33,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-28 10:42:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-28 10:42:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-28 10:42:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-09-28 10:42:33,636 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-09-28 10:42:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:33,637 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-09-28 10:42:33,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-28 10:42:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-09-28 10:42:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-28 10:42:33,638 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:33,638 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:33,639 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:33,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-09-28 10:42:33,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:33,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:33,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:33,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:33,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:34,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:34,485 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:34,493 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:42:34,578 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:42:34,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:34,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:35,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:35,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-28 10:42:35,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-28 10:42:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-28 10:42:35,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:35,439 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-09-28 10:42:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:37,217 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-09-28 10:42:37,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-28 10:42:37,218 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-28 10:42:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:37,219 INFO L225 Difference]: With dead ends: 437 [2018-09-28 10:42:37,219 INFO L226 Difference]: Without dead ends: 435 [2018-09-28 10:42:37,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-28 10:42:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-28 10:42:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-28 10:42:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-09-28 10:42:37,221 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-09-28 10:42:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:37,222 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-09-28 10:42:37,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-28 10:42:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-09-28 10:42:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-28 10:42:37,223 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:37,223 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:37,224 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:37,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-09-28 10:42:37,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:37,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:37,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:37,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:37,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:38,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:38,158 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 [2018-09-28 10:42:38,166 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:42:38,362 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-28 10:42:38,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:38,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:39,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:39,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-28 10:42:39,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-28 10:42:39,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-28 10:42:39,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:39,224 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-09-28 10:42:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:41,307 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-09-28 10:42:41,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-28 10:42:41,307 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-28 10:42:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:41,308 INFO L225 Difference]: With dead ends: 441 [2018-09-28 10:42:41,308 INFO L226 Difference]: Without dead ends: 439 [2018-09-28 10:42:41,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-28 10:42:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-28 10:42:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-28 10:42:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-09-28 10:42:41,311 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-09-28 10:42:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:41,311 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-09-28 10:42:41,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-28 10:42:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-09-28 10:42:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-28 10:42:41,313 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:41,313 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:41,313 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:41,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-09-28 10:42:41,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:41,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:41,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:41,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:41,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:42,202 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:42,202 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 [2018-09-28 10:42:42,209 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:42:42,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-09-28 10:42:42,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:42,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:43,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:43,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-28 10:42:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-28 10:42:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-28 10:42:43,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:43,278 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-09-28 10:42:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:45,176 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-09-28 10:42:45,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-28 10:42:45,176 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-09-28 10:42:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:45,177 INFO L225 Difference]: With dead ends: 445 [2018-09-28 10:42:45,178 INFO L226 Difference]: Without dead ends: 443 [2018-09-28 10:42:45,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-09-28 10:42:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-09-28 10:42:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-09-28 10:42:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-09-28 10:42:45,180 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-09-28 10:42:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:45,181 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-09-28 10:42:45,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-28 10:42:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-09-28 10:42:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-28 10:42:45,182 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:45,182 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:45,183 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:45,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:45,183 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-09-28 10:42:45,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:45,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:45,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:45,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:45,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:46,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:46,031 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 [2018-09-28 10:42:46,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:46,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:47,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:47,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-28 10:42:47,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-28 10:42:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-28 10:42:47,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:47,311 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-09-28 10:42:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:49,311 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-09-28 10:42:49,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-28 10:42:49,312 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-09-28 10:42:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:49,312 INFO L225 Difference]: With dead ends: 449 [2018-09-28 10:42:49,312 INFO L226 Difference]: Without dead ends: 447 [2018-09-28 10:42:49,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-28 10:42:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-09-28 10:42:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-09-28 10:42:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-09-28 10:42:49,315 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-09-28 10:42:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:49,315 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-09-28 10:42:49,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-28 10:42:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-09-28 10:42:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-28 10:42:49,317 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:49,317 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:49,317 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:49,317 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-09-28 10:42:49,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:49,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:49,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:42:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:50,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:50,266 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:42:50,274 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:42:50,364 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:42:50,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:50,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:51,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:51,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-28 10:42:51,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-28 10:42:51,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-28 10:42:51,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:51,291 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-09-28 10:42:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:53,299 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-09-28 10:42:53,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-28 10:42:53,299 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-09-28 10:42:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:53,300 INFO L225 Difference]: With dead ends: 453 [2018-09-28 10:42:53,300 INFO L226 Difference]: Without dead ends: 451 [2018-09-28 10:42:53,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-09-28 10:42:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-09-28 10:42:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-09-28 10:42:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-09-28 10:42:53,303 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-09-28 10:42:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:53,303 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-09-28 10:42:53,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-28 10:42:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-09-28 10:42:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-09-28 10:42:53,305 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:53,305 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:53,305 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:53,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:53,305 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-09-28 10:42:53,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:53,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:53,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:53,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:53,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:54,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:54,299 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 [2018-09-28 10:42:54,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:42:54,519 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-09-28 10:42:54,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:54,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:55,463 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:55,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-28 10:42:55,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-28 10:42:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-28 10:42:55,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:55,467 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-09-28 10:42:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:42:57,640 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-09-28 10:42:57,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-28 10:42:57,640 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-09-28 10:42:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:42:57,641 INFO L225 Difference]: With dead ends: 457 [2018-09-28 10:42:57,641 INFO L226 Difference]: Without dead ends: 455 [2018-09-28 10:42:57,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:42:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-09-28 10:42:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-09-28 10:42:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-09-28 10:42:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-09-28 10:42:57,643 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-09-28 10:42:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:42:57,644 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-09-28 10:42:57,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-28 10:42:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-09-28 10:42:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-28 10:42:57,645 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:42:57,645 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-09-28 10:42:57,645 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:42:57,646 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:42:57,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-09-28 10:42:57,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:42:57,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:42:57,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:57,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:42:57,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:42:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:42:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:58,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:42:58,563 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 [2018-09-28 10:42:58,570 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:42:58,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:42:58,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:42:58,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:42:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:42:59,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:42:59,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-28 10:42:59,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-28 10:42:59,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-28 10:42:59,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:42:59,694 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-09-28 10:43:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:01,958 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-09-28 10:43:01,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-28 10:43:01,958 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-09-28 10:43:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:01,959 INFO L225 Difference]: With dead ends: 461 [2018-09-28 10:43:01,959 INFO L226 Difference]: Without dead ends: 459 [2018-09-28 10:43:01,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-28 10:43:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-09-28 10:43:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-09-28 10:43:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-09-28 10:43:01,962 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-09-28 10:43:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:01,962 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-09-28 10:43:01,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-28 10:43:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-09-28 10:43:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-09-28 10:43:01,964 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:01,964 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:01,964 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:01,964 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-09-28 10:43:01,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:01,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:01,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:01,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:01,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:02,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:02,911 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 [2018-09-28 10:43:02,918 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:43:03,128 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-09-28 10:43:03,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:03,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:04,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:04,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-28 10:43:04,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-28 10:43:04,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-28 10:43:04,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:04,192 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 116 states. [2018-09-28 10:43:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:06,331 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-09-28 10:43:06,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-28 10:43:06,331 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-09-28 10:43:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:06,332 INFO L225 Difference]: With dead ends: 465 [2018-09-28 10:43:06,332 INFO L226 Difference]: Without dead ends: 463 [2018-09-28 10:43:06,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-09-28 10:43:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-09-28 10:43:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-09-28 10:43:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-09-28 10:43:06,336 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 458 [2018-09-28 10:43:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:06,336 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-09-28 10:43:06,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-28 10:43:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-09-28 10:43:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-09-28 10:43:06,338 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:06,338 INFO L375 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:06,338 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:06,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash 641535296, now seen corresponding path program 114 times [2018-09-28 10:43:06,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:06,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:06,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:06,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:06,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:07,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:07,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:43:07,518 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:43:07,724 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-09-28 10:43:07,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:07,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:08,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:08,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-28 10:43:08,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-28 10:43:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-28 10:43:08,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:08,665 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 117 states. [2018-09-28 10:43:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:10,575 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2018-09-28 10:43:10,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-28 10:43:10,575 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-09-28 10:43:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:10,576 INFO L225 Difference]: With dead ends: 469 [2018-09-28 10:43:10,576 INFO L226 Difference]: Without dead ends: 467 [2018-09-28 10:43:10,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-09-28 10:43:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-09-28 10:43:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-09-28 10:43:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2018-09-28 10:43:10,579 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 462 [2018-09-28 10:43:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:10,580 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2018-09-28 10:43:10,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-28 10:43:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2018-09-28 10:43:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-28 10:43:10,582 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:10,582 INFO L375 BasicCegarLoop]: trace histogram [115, 115, 115, 115, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:10,582 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:10,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1556462314, now seen corresponding path program 115 times [2018-09-28 10:43:10,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:10,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:10,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:10,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:10,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:11,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:11,492 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 [2018-09-28 10:43:11,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:43:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:11,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:12,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:12,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-28 10:43:12,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-28 10:43:12,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-28 10:43:12,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:12,757 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand 118 states. [2018-09-28 10:43:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:14,934 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2018-09-28 10:43:14,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-28 10:43:14,935 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-09-28 10:43:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:14,935 INFO L225 Difference]: With dead ends: 473 [2018-09-28 10:43:14,935 INFO L226 Difference]: Without dead ends: 471 [2018-09-28 10:43:14,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-09-28 10:43:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-09-28 10:43:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-09-28 10:43:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2018-09-28 10:43:14,938 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 466 [2018-09-28 10:43:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:14,938 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2018-09-28 10:43:14,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-28 10:43:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2018-09-28 10:43:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-28 10:43:14,940 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:14,940 INFO L375 BasicCegarLoop]: trace histogram [116, 116, 116, 116, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:14,941 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:14,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:14,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1635023980, now seen corresponding path program 116 times [2018-09-28 10:43:14,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:14,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:14,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:14,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:43:14,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:15,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:15,901 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 [2018-09-28 10:43:15,909 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:43:15,995 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:43:15,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:16,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:16,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:16,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-28 10:43:16,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-28 10:43:16,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-28 10:43:16,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:16,969 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 119 states. [2018-09-28 10:43:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:19,173 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2018-09-28 10:43:19,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-28 10:43:19,173 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-09-28 10:43:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:19,174 INFO L225 Difference]: With dead ends: 477 [2018-09-28 10:43:19,175 INFO L226 Difference]: Without dead ends: 475 [2018-09-28 10:43:19,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-09-28 10:43:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-09-28 10:43:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-09-28 10:43:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2018-09-28 10:43:19,178 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 470 [2018-09-28 10:43:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:19,179 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2018-09-28 10:43:19,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-28 10:43:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2018-09-28 10:43:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-28 10:43:19,181 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:19,181 INFO L375 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:19,181 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:19,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:19,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2121734338, now seen corresponding path program 117 times [2018-09-28 10:43:19,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:19,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:19,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:19,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:19,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:20,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:20,138 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 [2018-09-28 10:43:20,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:43:20,382 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-09-28 10:43:20,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:20,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:21,347 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:21,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-28 10:43:21,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-28 10:43:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-28 10:43:21,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:21,350 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand 120 states. [2018-09-28 10:43:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:23,565 INFO L93 Difference]: Finished difference Result 481 states and 481 transitions. [2018-09-28 10:43:23,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-28 10:43:23,566 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-09-28 10:43:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:23,567 INFO L225 Difference]: With dead ends: 481 [2018-09-28 10:43:23,567 INFO L226 Difference]: Without dead ends: 479 [2018-09-28 10:43:23,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-28 10:43:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-09-28 10:43:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-28 10:43:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2018-09-28 10:43:23,569 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 474 [2018-09-28 10:43:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:23,569 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2018-09-28 10:43:23,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-28 10:43:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2018-09-28 10:43:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-28 10:43:23,571 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:23,571 INFO L375 BasicCegarLoop]: trace histogram [118, 118, 118, 118, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:23,571 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:23,571 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:23,571 INFO L82 PathProgramCache]: Analyzing trace with hash 444098024, now seen corresponding path program 118 times [2018-09-28 10:43:23,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:23,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:23,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:23,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:23,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:24,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:24,564 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 [2018-09-28 10:43:24,571 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:43:24,665 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:43:24,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:24,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:25,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:25,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-28 10:43:25,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-28 10:43:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-28 10:43:25,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:25,640 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand 121 states. [2018-09-28 10:43:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:27,875 INFO L93 Difference]: Finished difference Result 485 states and 485 transitions. [2018-09-28 10:43:27,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-28 10:43:27,875 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-09-28 10:43:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:27,876 INFO L225 Difference]: With dead ends: 485 [2018-09-28 10:43:27,876 INFO L226 Difference]: Without dead ends: 483 [2018-09-28 10:43:27,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-09-28 10:43:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-09-28 10:43:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-09-28 10:43:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2018-09-28 10:43:27,880 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 478 [2018-09-28 10:43:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:27,881 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2018-09-28 10:43:27,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-28 10:43:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2018-09-28 10:43:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-09-28 10:43:27,883 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:27,884 INFO L375 BasicCegarLoop]: trace histogram [119, 119, 119, 119, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:27,884 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:27,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:27,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1663795310, now seen corresponding path program 119 times [2018-09-28 10:43:27,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:27,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:27,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:27,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:27,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:28,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:28,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:43:28,933 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:43:29,162 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-09-28 10:43:29,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:29,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:30,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:30,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-28 10:43:30,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-28 10:43:30,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-28 10:43:30,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:30,157 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand 122 states. [2018-09-28 10:43:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:43:32,673 INFO L93 Difference]: Finished difference Result 489 states and 489 transitions. [2018-09-28 10:43:32,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-28 10:43:32,673 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-09-28 10:43:32,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:43:32,674 INFO L225 Difference]: With dead ends: 489 [2018-09-28 10:43:32,674 INFO L226 Difference]: Without dead ends: 487 [2018-09-28 10:43:32,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:43:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-28 10:43:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-09-28 10:43:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-09-28 10:43:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 487 transitions. [2018-09-28 10:43:32,677 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 487 transitions. Word has length 482 [2018-09-28 10:43:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:43:32,678 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 487 transitions. [2018-09-28 10:43:32,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-28 10:43:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 487 transitions. [2018-09-28 10:43:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-09-28 10:43:32,679 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:43:32,679 INFO L375 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 1, 1, 1, 1, 1, 1] [2018-09-28 10:43:32,680 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:43:32,680 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:43:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash -86526916, now seen corresponding path program 120 times [2018-09-28 10:43:32,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:43:32,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:43:32,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:32,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:43:32,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:43:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:43:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:33,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:43:33,691 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 [2018-09-28 10:43:33,700 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:43:33,921 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-09-28 10:43:33,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:43:33,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:43:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:43:34,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:43:34,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-28 10:43:34,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-28 10:43:34,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-28 10:43:34,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:43:34,931 INFO L87 Difference]: Start difference. First operand 487 states and 487 transitions. Second operand 123 states. Received shutdown request... [2018-09-28 10:43:35,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-28 10:43:35,297 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-28 10:43:35,302 WARN L206 ceAbstractionStarter]: Timeout [2018-09-28 10:43:35,303 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:43:35 BoogieIcfgContainer [2018-09-28 10:43:35,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:43:35,304 INFO L168 Benchmark]: Toolchain (without parser) took 245231.13 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 242.7 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 280.7 MB). Peak memory consumption was 523.5 MB. Max. memory is 7.1 GB. [2018-09-28 10:43:35,305 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-09-28 10:43:35,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.63 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. [2018-09-28 10:43:35,306 INFO L168 Benchmark]: Boogie Preprocessor took 25.62 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. [2018-09-28 10:43:35,307 INFO L168 Benchmark]: RCFGBuilder took 406.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:43:35,307 INFO L168 Benchmark]: TraceAbstraction took 244751.47 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 242.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 259.6 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. [2018-09-28 10:43:35,310 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 0.21 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 41.63 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 25.62 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 406.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244751.47 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 242.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 259.6 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was constructing difference of abstraction (487states) and FLOYD_HOARE automaton (currently 40 states, 123 states before enhancement), while ReachableStatesComputation was computing reachable states (149 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 244.6s OverallTime, 122 OverallIterations, 120 TraceHistogramMax, 100.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1096 SDtfs, 765 SDslu, 25218 SDs, 0 SdLazy, 10752 SolverSat, 254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37144 GetRequests, 29762 SyntacticMatches, 0 SemanticMatches, 7382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 121 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 10.4s SatisfiabilityAnalysisTime, 117.0s InterpolantComputationTime, 59532 NumberOfCodeBlocks, 59532 NumberOfCodeBlocksAsserted, 3982 NumberOfCheckSat, 59290 ConstructedInterpolants, 0 QuantifiedInterpolants, 57631070 SizeOfPredicates, 120 NumberOfNonLiveVariables, 45000 ConjunctsInSsa, 7500 ConjunctsInUnsatCore, 242 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2318360 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/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-28_10-43-35-320.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_10-43-35-320.csv Completed graceful shutdown