java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:37:39,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:37:39,990 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:37:40,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:37:40,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:37:40,007 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:37:40,008 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:37:40,010 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:37:40,012 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:37:40,013 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:37:40,014 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 14:37:40,014 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 14:37:40,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 14:37:40,016 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 14:37:40,017 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 14:37:40,018 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 14:37:40,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 14:37:40,020 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 14:37:40,022 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 14:37:40,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 14:37:40,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 14:37:40,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 14:37:40,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-04 14:37:40,029 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-04 14:37:40,029 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-04 14:37:40,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-04 14:37:40,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-04 14:37:40,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-04 14:37:40,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-04 14:37:40,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-04 14:37:40,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-04 14:37:40,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-04 14:37:40,037 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 14:37:40,052 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:37:40,052 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:37:40,053 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:37:40,053 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:37:40,054 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:37:40,054 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:37:40,054 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:37:40,055 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:37:40,055 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:37:40,055 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:37:40,055 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:37:40,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:37:40,057 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:37:40,057 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:37:40,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:37:40,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:37:40,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:37:40,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:37:40,058 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:37:40,058 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:37:40,058 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:37:40,058 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:37:40,059 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:37:40,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:37:40,059 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:37:40,059 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:37:40,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:37:40,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:37:40,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:37:40,129 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:37:40,129 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:37:40,130 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl [2018-10-04 14:37:40,130 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl' [2018-10-04 14:37:40,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:37:40,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:37:40,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:37:40,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:37:40,178 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:37:40,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,217 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 14:37:40,218 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 14:37:40,218 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 14:37:40,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:37:40,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:37:40,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:37:40,222 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:37:40,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... [2018-10-04 14:37:40,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:37:40,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:37:40,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:37:40,250 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:37:40,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:37:40,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 14:37:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 14:37:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 14:37:40,554 INFO L338 CfgBuilder]: Using library mode [2018-10-04 14:37:40,554 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:37:40 BoogieIcfgContainer [2018-10-04 14:37:40,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:37:40,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:37:40,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:37:40,562 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:37:40,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:40" (1/2) ... [2018-10-04 14:37:40,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f82fa3 and model type Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:37:40, skipping insertion in model container [2018-10-04 14:37:40,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:37:40" (2/2) ... [2018-10-04 14:37:40,566 INFO L112 eAbstractionObserver]: Analyzing ICFG Octopussy.bpl [2018-10-04 14:37:40,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:37:40,588 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:37:40,644 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:37:40,645 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:37:40,645 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:37:40,645 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:37:40,645 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:37:40,646 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:37:40,646 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:37:40,646 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:37:40,646 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:37:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 14:37:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 14:37:40,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:40,682 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 14:37:40,683 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:40,692 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:40,693 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-04 14:37:40,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:40,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:40,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:40,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:40,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:40,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:37:40,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:37:40,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:37:40,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:37:40,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:40,854 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 14:37:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:40,891 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-04 14:37:40,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:37:40,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 14:37:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:40,909 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:37:40,910 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 14:37:40,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 14:37:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 14:37:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 14:37:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 14:37:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 14:37:40,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 14:37:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:40,953 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 14:37:40,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:37:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 14:37:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:37:40,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:40,955 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:37:40,955 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:40,955 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-04 14:37:40,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:40,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:40,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:40,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:40,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:41,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:41,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:41,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:41,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 14:37:41,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:37:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:37:41,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:41,259 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 14:37:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:41,295 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 14:37:41,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:37:41,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 14:37:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:41,297 INFO L225 Difference]: With dead ends: 8 [2018-10-04 14:37:41,297 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 14:37:41,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-04 14:37:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 14:37:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 14:37:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 14:37:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 14:37:41,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 14:37:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:41,304 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 14:37:41,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:37:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 14:37:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 14:37:41,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:41,305 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 14:37:41,305 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:41,305 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-04 14:37:41,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:41,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:41,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:41,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:41,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:41,423 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:41,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:41,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:41,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:41,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 14:37:41,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 14:37:41,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 14:37:41,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:41,483 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 14:37:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:41,505 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 14:37:41,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:37:41,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 14:37:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:41,506 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:37:41,506 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 14:37:41,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 14:37:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 14:37:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 14:37:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 14:37:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 14:37:41,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 14:37:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:41,509 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 14:37:41,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 14:37:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 14:37:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 14:37:41,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:41,510 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 14:37:41,511 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:41,511 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-04 14:37:41,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:41,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:41,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:41,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:41,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:41,641 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 14:37:41,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:41,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:41,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 14:37:41,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:37:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:37:41,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:41,738 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 14:37:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:41,757 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 14:37:41,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:37:41,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 14:37:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:41,759 INFO L225 Difference]: With dead ends: 10 [2018-10-04 14:37:41,759 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 14:37:41,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 14:37:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 14:37:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 14:37:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 14:37:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 14:37:41,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 14:37:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:41,763 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 14:37:41,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:37:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 14:37:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 14:37:41,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:41,764 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 14:37:41,764 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:41,764 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-04 14:37:41,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:41,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:41,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:41,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:42,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:42,087 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:42,096 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:42,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:42,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:42,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 14:37:42,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:37:42,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:37:42,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:42,157 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 14:37:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:42,206 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:37:42,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:37:42,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 14:37:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:42,208 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:37:42,209 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 14:37:42,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 5 [2018-10-04 14:37:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 14:37:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 14:37:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:37:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 14:37:42,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 14:37:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:42,213 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 14:37:42,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:37:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 14:37:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:37:42,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:42,214 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 14:37:42,215 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:42,215 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:42,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-04 14:37:42,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:42,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:42,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:42,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:42,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:42,335 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:42,400 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 14:37:42,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:42,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:42,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 14:37:42,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:37:42,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:37:42,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:42,491 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 14:37:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:42,516 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 14:37:42,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:37:42,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 14:37:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:42,518 INFO L225 Difference]: With dead ends: 12 [2018-10-04 14:37:42,518 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 14:37:42,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 14:37:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 14:37:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 14:37:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 14:37:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 14:37:42,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 14:37:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:42,521 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 14:37:42,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:37:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 14:37:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 14:37:42,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:42,522 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 14:37:42,523 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:42,523 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-04 14:37:42,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:42,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:42,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:42,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:42,652 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:42,661 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 14:37:42,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:42,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:42,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 14:37:42,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 14:37:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 14:37:42,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:42,735 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 14:37:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:42,764 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:37:42,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:37:42,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 14:37:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:42,765 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:37:42,765 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:37:42,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-04 14:37:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:37:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:37:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:37:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 14:37:42,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 14:37:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:42,770 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 14:37:42,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 14:37:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 14:37:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:37:42,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:42,771 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 14:37:42,772 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:42,772 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:42,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-04 14:37:42,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:42,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:42,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:42,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:43,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:43,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:43,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:43,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 14:37:43,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:37:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:37:43,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:43,376 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 14:37:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:43,417 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 14:37:43,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:37:43,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 14:37:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:43,418 INFO L225 Difference]: With dead ends: 14 [2018-10-04 14:37:43,419 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 14:37:43,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-04 14:37:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 14:37:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 14:37:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 14:37:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 14:37:43,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 14:37:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:43,423 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 14:37:43,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:37:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 14:37:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 14:37:43,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:43,424 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 14:37:43,424 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:43,424 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-04 14:37:43,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:43,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:43,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:43,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:43,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:43,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:43,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:43,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:43,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:43,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 14:37:43,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 14:37:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 14:37:43,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:43,749 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 14:37:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:43,814 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:37:43,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:37:43,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 14:37:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:43,815 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:37:43,815 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:37:43,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-04 14:37:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:37:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:37:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:37:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 14:37:43,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 14:37:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:43,818 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 14:37:43,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 14:37:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 14:37:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:37:43,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:43,819 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 14:37:43,819 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:43,820 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-04 14:37:43,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:43,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:43,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:43,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:43,940 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:43,948 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:43,963 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 14:37:43,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:43,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:44,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 14:37:44,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:37:44,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:37:44,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:44,042 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 14:37:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:44,066 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 14:37:44,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:37:44,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 14:37:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:44,067 INFO L225 Difference]: With dead ends: 16 [2018-10-04 14:37:44,068 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 14:37:44,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-04 14:37:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 14:37:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 14:37:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:37:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 14:37:44,071 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 14:37:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:44,071 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 14:37:44,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:37:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 14:37:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 14:37:44,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:44,072 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 14:37:44,072 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:44,073 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-04 14:37:44,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:44,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:44,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:44,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:44,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:44,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:44,315 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:44,345 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:44,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:44,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:44,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 14:37:44,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:37:44,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:37:44,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:44,418 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 14:37:44,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:44,488 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:37:44,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:37:44,489 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 14:37:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:44,489 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:37:44,489 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 14:37:44,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 14:37:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 14:37:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 14:37:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 14:37:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 14:37:44,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 14:37:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:44,492 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 14:37:44,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:37:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 14:37:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 14:37:44,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:44,493 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 14:37:44,493 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:44,493 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:44,494 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-04 14:37:44,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:44,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:44,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:44,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:44,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:44,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:44,700 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:44,713 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 14:37:44,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:44,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:44,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 14:37:44,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:37:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:37:44,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:44,978 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 14:37:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:45,043 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 14:37:45,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:37:45,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 14:37:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:45,045 INFO L225 Difference]: With dead ends: 18 [2018-10-04 14:37:45,045 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 14:37:45,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 14:37:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 14:37:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 14:37:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 14:37:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 14:37:45,049 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 14:37:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:45,049 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 14:37:45,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:37:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 14:37:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 14:37:45,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:45,050 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 14:37:45,050 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:45,050 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:45,051 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-04 14:37:45,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:45,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:45,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:45,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:45,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:45,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:45,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:45,213 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:37:45,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:45,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:45,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:45,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 14:37:45,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:37:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:37:45,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:45,293 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 14:37:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:45,326 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:37:45,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:37:45,327 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 14:37:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:45,327 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:37:45,327 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 14:37:45,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 13 [2018-10-04 14:37:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 14:37:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 14:37:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 14:37:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 14:37:45,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 14:37:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:45,332 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 14:37:45,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:37:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 14:37:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 14:37:45,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:45,333 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 14:37:45,333 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:45,333 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-04 14:37:45,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:45,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:45,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:45,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:45,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:45,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:45,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:45,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:45,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:45,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 14:37:45,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:37:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:37:45,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:45,643 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 14:37:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:45,819 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 14:37:45,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:37:45,821 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 14:37:45,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:45,822 INFO L225 Difference]: With dead ends: 20 [2018-10-04 14:37:45,822 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 14:37:45,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 14:37:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 14:37:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 14:37:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 14:37:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 14:37:45,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 14:37:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:45,826 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 14:37:45,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:37:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 14:37:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 14:37:45,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:45,827 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 14:37:45,827 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:45,828 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-04 14:37:45,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:45,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:45,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:45,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:46,064 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:46,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:46,099 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:46,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:46,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:46,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 14:37:46,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 14:37:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 14:37:46,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:46,177 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 14:37:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:46,217 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:37:46,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:37:46,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 14:37:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:46,218 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:37:46,218 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:37:46,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-04 14:37:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:37:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 14:37:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:37:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 14:37:46,221 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 14:37:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:46,222 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 14:37:46,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 14:37:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 14:37:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:37:46,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:46,223 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 14:37:46,223 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:46,223 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-04 14:37:46,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:46,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:46,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:46,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:46,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:46,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:46,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:46,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 14:37:46,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:46,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:46,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 14:37:46,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:37:46,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:37:46,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:46,642 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 14:37:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:46,695 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 14:37:46,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:37:46,697 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 14:37:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:46,697 INFO L225 Difference]: With dead ends: 22 [2018-10-04 14:37:46,698 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 14:37:46,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-04 14:37:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 14:37:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 14:37:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 14:37:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 14:37:46,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 14:37:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:46,701 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 14:37:46,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:37:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 14:37:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 14:37:46,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:46,702 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 14:37:46,702 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:46,702 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-04 14:37:46,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:46,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:46,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:46,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:46,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:47,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:47,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:47,104 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:47,137 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:47,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:47,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:47,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:47,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 14:37:47,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:37:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:37:47,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:47,337 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 14:37:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:47,406 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:37:47,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:37:47,406 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 14:37:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:47,407 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:37:47,407 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 14:37:47,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 17 [2018-10-04 14:37:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 14:37:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 14:37:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 14:37:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 14:37:47,411 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 14:37:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:47,411 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 14:37:47,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:37:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 14:37:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 14:37:47,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:47,412 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 14:37:47,413 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:47,413 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:47,413 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-04 14:37:47,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:47,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:47,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:47,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:47,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:47,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:47,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:47,739 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 14:37:47,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:47,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:47,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:47,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 14:37:47,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:37:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:37:47,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:47,828 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 14:37:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:47,878 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 14:37:47,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:37:47,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 14:37:47,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:47,879 INFO L225 Difference]: With dead ends: 24 [2018-10-04 14:37:47,879 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 14:37:47,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 18 [2018-10-04 14:37:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 14:37:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 14:37:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 14:37:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 14:37:47,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 14:37:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:47,884 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 14:37:47,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:37:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 14:37:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 14:37:47,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:47,885 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 14:37:47,886 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:47,886 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-04 14:37:47,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:47,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:47,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:47,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:48,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:48,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:48,106 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:48,233 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 14:37:48,233 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:48,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:48,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:48,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 14:37:48,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:37:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:37:48,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:48,364 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 14:37:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:48,407 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:37:48,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:37:48,408 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 14:37:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:48,409 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:37:48,409 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:37:48,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 19 [2018-10-04 14:37:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:37:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 14:37:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 14:37:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 14:37:48,413 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 14:37:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:48,413 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 14:37:48,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:37:48,413 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 14:37:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 14:37:48,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:48,414 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 14:37:48,414 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:48,414 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-04 14:37:48,415 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:48,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:48,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:48,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:48,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:48,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:48,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:48,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:48,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:49,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:49,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 14:37:49,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:37:49,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:37:49,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:49,010 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 14:37:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:49,112 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 14:37:49,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:37:49,112 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 14:37:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:49,113 INFO L225 Difference]: With dead ends: 26 [2018-10-04 14:37:49,113 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 14:37:49,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 20 [2018-10-04 14:37:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 14:37:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 14:37:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 14:37:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 14:37:49,116 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 14:37:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:49,117 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 14:37:49,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:37:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 14:37:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 14:37:49,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:49,118 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 14:37:49,118 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:49,118 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-04 14:37:49,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:49,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:49,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:49,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:49,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:49,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:49,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:49,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:49,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:49,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:49,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:49,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:49,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 14:37:49,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:37:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:37:49,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:49,708 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 14:37:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:49,744 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:37:49,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:37:49,748 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 14:37:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:49,749 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:37:49,749 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 14:37:49,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 21 [2018-10-04 14:37:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 14:37:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 14:37:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:37:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 14:37:49,752 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 14:37:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:49,752 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 14:37:49,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:37:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 14:37:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:37:49,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:49,753 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 14:37:49,754 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:49,754 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-04 14:37:49,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:49,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:49,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:49,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:49,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:50,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:50,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:50,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:50,322 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 14:37:50,322 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:50,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:50,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:50,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 14:37:50,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:37:50,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:37:50,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:50,572 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 14:37:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:50,839 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 14:37:50,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:37:50,841 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 14:37:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:50,842 INFO L225 Difference]: With dead ends: 28 [2018-10-04 14:37:50,842 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 14:37:50,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 22 [2018-10-04 14:37:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 14:37:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 14:37:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 14:37:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 14:37:50,845 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 14:37:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:50,845 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 14:37:50,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:37:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 14:37:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 14:37:50,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:50,846 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 14:37:50,846 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:50,846 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-04 14:37:50,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:50,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:50,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:50,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:50,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:51,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:51,188 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:51,203 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:51,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:51,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:51,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 14:37:51,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 14:37:51,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 14:37:51,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:51,323 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 14:37:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:51,414 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:37:51,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:37:51,414 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 14:37:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:51,415 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:37:51,415 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 14:37:51,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 23 [2018-10-04 14:37:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 14:37:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 14:37:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 14:37:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 14:37:51,420 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 14:37:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:51,420 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 14:37:51,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 14:37:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 14:37:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 14:37:51,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:51,421 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 14:37:51,421 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:51,421 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-04 14:37:51,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:51,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:51,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:51,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:51,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:51,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:51,744 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:51,769 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 14:37:51,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:51,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:51,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 14:37:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:37:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:37:51,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:51,878 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 14:37:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:51,907 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 14:37:51,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:37:51,908 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 14:37:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:51,909 INFO L225 Difference]: With dead ends: 30 [2018-10-04 14:37:51,909 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 14:37:51,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 24 [2018-10-04 14:37:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 14:37:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 14:37:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 14:37:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 14:37:51,913 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 14:37:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:51,913 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 14:37:51,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:37:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 14:37:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 14:37:51,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:51,914 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 14:37:51,915 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:51,915 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-04 14:37:51,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:51,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:51,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:51,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:51,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:52,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:52,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:52,184 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:52,209 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:37:52,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:52,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:52,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:52,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 14:37:52,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 14:37:52,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 14:37:52,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:52,351 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 14:37:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:52,409 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:37:52,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:37:52,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 14:37:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:52,410 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:37:52,411 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 14:37:52,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 25 [2018-10-04 14:37:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 14:37:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 14:37:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:37:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 14:37:52,416 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 14:37:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:52,416 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 14:37:52,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 14:37:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 14:37:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:37:52,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:52,417 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 14:37:52,417 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:52,418 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-04 14:37:52,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:52,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:52,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:52,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:52,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:52,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:52,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:52,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:52,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:52,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 14:37:52,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:37:52,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:37:52,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:52,941 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 14:37:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:52,985 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 14:37:52,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:37:52,985 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 14:37:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:52,986 INFO L225 Difference]: With dead ends: 32 [2018-10-04 14:37:52,986 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 14:37:52,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 26 [2018-10-04 14:37:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 14:37:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 14:37:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 14:37:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 14:37:52,990 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 14:37:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:52,990 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 14:37:52,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:37:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 14:37:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 14:37:52,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:52,991 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 14:37:52,991 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:52,992 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:52,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-04 14:37:52,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:52,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:54,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:54,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:54,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:54,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:54,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:54,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:54,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:54,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 14:37:54,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 14:37:54,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 14:37:54,179 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:54,179 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 14:37:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:54,254 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:37:54,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:37:54,255 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 14:37:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:54,255 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:37:54,255 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 14:37:54,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 27 [2018-10-04 14:37:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 14:37:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 14:37:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 14:37:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 14:37:54,259 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 14:37:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:54,260 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 14:37:54,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 14:37:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 14:37:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 14:37:54,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:54,261 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 14:37:54,261 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:54,261 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:54,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-04 14:37:54,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:54,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:54,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:54,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:54,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:54,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:54,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:54,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 14:37:54,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:54,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:54,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:54,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 14:37:54,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:37:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:37:54,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:54,696 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 14:37:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:54,732 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 14:37:54,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:37:54,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 14:37:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:54,733 INFO L225 Difference]: With dead ends: 34 [2018-10-04 14:37:54,733 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 14:37:54,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 28 [2018-10-04 14:37:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 14:37:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 14:37:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 14:37:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 14:37:54,738 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 14:37:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:54,738 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 14:37:54,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:37:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 14:37:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 14:37:54,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:54,739 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 14:37:54,739 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:54,739 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-04 14:37:54,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:54,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:55,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:55,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:55,253 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:55,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:55,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:55,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:55,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:55,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 14:37:55,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 14:37:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 14:37:55,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:55,397 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 14:37:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:55,453 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:37:55,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:37:55,454 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 14:37:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:55,454 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:37:55,454 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:37:55,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 29 [2018-10-04 14:37:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:37:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 14:37:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 14:37:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 14:37:55,459 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 14:37:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:55,459 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 14:37:55,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 14:37:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 14:37:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 14:37:55,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:55,460 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 14:37:55,461 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:55,461 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:55,461 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-04 14:37:55,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:55,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:55,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:55,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:55,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:55,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:55,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:55,869 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:55,891 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 14:37:55,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:55,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:55,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:55,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 14:37:55,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:37:55,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:37:55,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:55,994 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 14:37:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:56,043 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 14:37:56,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:37:56,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 14:37:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:56,044 INFO L225 Difference]: With dead ends: 36 [2018-10-04 14:37:56,044 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 14:37:56,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 30 [2018-10-04 14:37:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 14:37:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 14:37:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 14:37:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 14:37:56,048 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 14:37:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:56,048 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 14:37:56,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:37:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 14:37:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 14:37:56,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:56,049 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 14:37:56,049 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:56,049 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:56,049 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-04 14:37:56,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:56,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:56,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:56,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:56,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:56,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:56,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:56,497 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:56,520 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 14:37:56,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:56,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:56,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:56,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 14:37:56,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 14:37:56,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 14:37:56,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:56,649 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 14:37:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:56,697 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:37:56,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:37:56,698 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 14:37:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:56,698 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:37:56,698 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 14:37:56,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 31 [2018-10-04 14:37:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 14:37:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 14:37:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 14:37:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 14:37:56,701 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 14:37:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:56,702 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 14:37:56,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 14:37:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 14:37:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 14:37:56,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:56,702 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 14:37:56,703 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:56,703 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-04 14:37:56,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:56,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:56,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:56,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:56,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:57,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:57,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:57,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:57,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:57,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:57,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 14:37:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:37:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:37:57,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:57,259 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 14:37:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:57,425 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 14:37:57,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:37:57,425 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 14:37:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:57,426 INFO L225 Difference]: With dead ends: 38 [2018-10-04 14:37:57,426 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 14:37:57,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 32 [2018-10-04 14:37:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 14:37:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 14:37:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 14:37:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 14:37:57,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 14:37:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:57,431 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 14:37:57,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:37:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 14:37:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 14:37:57,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:57,432 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 14:37:57,433 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:57,433 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-04 14:37:57,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:57,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:57,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:57,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:57,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:57,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:57,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:57,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:57,927 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:57,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:57,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:58,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:58,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 14:37:58,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 14:37:58,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 14:37:58,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:58,032 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 14:37:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:58,071 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:37:58,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:37:58,071 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 14:37:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:58,072 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:37:58,072 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 14:37:58,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 33 [2018-10-04 14:37:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 14:37:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 14:37:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 14:37:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 14:37:58,077 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 14:37:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:58,077 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 14:37:58,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 14:37:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 14:37:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 14:37:58,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:58,078 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 14:37:58,078 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:58,078 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-04 14:37:58,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:58,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:58,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:58,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:58,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:58,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:58,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:58,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:58,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 14:37:58,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:58,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:58,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:58,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 14:37:58,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:37:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:37:58,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:58,977 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 14:37:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:59,066 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 14:37:59,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:37:59,067 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 14:37:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:59,067 INFO L225 Difference]: With dead ends: 40 [2018-10-04 14:37:59,067 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 14:37:59,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 34 [2018-10-04 14:37:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 14:37:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 14:37:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 14:37:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 14:37:59,069 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 14:37:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:59,070 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 14:37:59,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:37:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 14:37:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 14:37:59,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:59,070 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 14:37:59,070 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:59,070 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:59,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-04 14:37:59,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:59,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:59,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:59,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:59,442 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:59,482 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:59,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:59,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:59,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:59,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 14:37:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 14:37:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 14:37:59,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:59,712 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 14:37:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:59,756 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:37:59,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:37:59,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 14:37:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:59,757 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:37:59,757 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 14:37:59,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 35 [2018-10-04 14:37:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 14:37:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 14:37:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:37:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 14:37:59,761 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 14:37:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:59,761 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 14:37:59,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 14:37:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 14:37:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:37:59,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:59,762 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 14:37:59,762 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:59,763 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-04 14:37:59,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:59,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:59,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,764 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:59,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:00,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:00,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:00,524 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:00,556 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 14:38:00,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:00,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:00,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:00,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 14:38:00,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:38:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:38:00,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:00,690 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 14:38:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:00,766 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 14:38:00,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:38:00,766 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 14:38:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:00,767 INFO L225 Difference]: With dead ends: 42 [2018-10-04 14:38:00,767 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 14:38:00,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 36 [2018-10-04 14:38:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 14:38:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 14:38:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 14:38:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 14:38:00,770 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 14:38:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:00,770 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 14:38:00,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:38:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 14:38:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 14:38:00,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:00,771 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 14:38:00,771 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:00,771 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-04 14:38:00,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:00,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:00,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:00,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:00,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:01,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:01,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:01,463 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:01,491 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:38:01,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:01,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:02,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:02,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 14:38:02,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 14:38:02,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 14:38:02,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:02,491 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 14:38:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:02,941 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:38:02,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:38:02,942 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 14:38:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:02,943 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:38:02,943 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 14:38:02,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.5s impTime 37 [2018-10-04 14:38:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 14:38:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 14:38:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:38:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 14:38:02,946 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 14:38:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:02,947 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 14:38:02,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 14:38:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 14:38:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:38:02,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:02,947 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 14:38:02,948 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:02,948 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-04 14:38:02,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:02,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:02,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:02,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:02,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:03,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:03,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:03,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:03,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:03,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:03,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 14:38:03,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:38:03,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:38:03,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:03,760 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 14:38:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:03,919 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 14:38:03,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:38:03,924 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 14:38:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:03,925 INFO L225 Difference]: With dead ends: 44 [2018-10-04 14:38:03,925 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 14:38:03,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 38 [2018-10-04 14:38:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 14:38:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 14:38:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 14:38:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 14:38:03,928 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 14:38:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:03,928 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 14:38:03,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:38:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 14:38:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 14:38:03,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:03,932 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 14:38:03,933 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:03,933 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-04 14:38:03,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:03,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:03,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:03,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:03,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:04,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:04,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:04,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:04,591 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:04,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:04,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:04,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:04,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 14:38:04,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 14:38:04,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 14:38:04,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:04,697 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 14:38:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:04,786 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:38:04,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:38:04,786 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 14:38:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:04,787 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:38:04,787 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:38:04,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 39 [2018-10-04 14:38:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:38:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 14:38:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 14:38:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 14:38:04,790 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 14:38:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:04,790 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 14:38:04,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 14:38:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 14:38:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 14:38:04,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:04,791 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 14:38:04,791 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:04,791 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-04 14:38:04,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:04,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:04,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:04,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:04,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:05,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:05,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:05,544 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:05,575 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 14:38:05,575 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:05,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:05,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:05,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 14:38:05,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:38:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:38:05,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:05,675 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 14:38:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:05,739 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 14:38:05,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:38:05,740 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 14:38:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:05,740 INFO L225 Difference]: With dead ends: 46 [2018-10-04 14:38:05,740 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 14:38:05,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime 40 [2018-10-04 14:38:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 14:38:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 14:38:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 14:38:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 14:38:05,742 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 14:38:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:05,742 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 14:38:05,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:38:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 14:38:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 14:38:05,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:05,743 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 14:38:05,743 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:05,743 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-04 14:38:05,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:05,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:05,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:05,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:05,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:07,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:07,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:07,125 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:07,149 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:07,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:07,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:07,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:07,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 14:38:07,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 14:38:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 14:38:07,252 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:07,252 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 14:38:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:07,322 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:38:07,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:38:07,323 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 14:38:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:07,323 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:38:07,324 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 14:38:07,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 41 [2018-10-04 14:38:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 14:38:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 14:38:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 14:38:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 14:38:07,326 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 14:38:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:07,326 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 14:38:07,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 14:38:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 14:38:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 14:38:07,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:07,327 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 14:38:07,327 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:07,328 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-04 14:38:07,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:07,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:07,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:07,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:07,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:08,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:08,289 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:08,298 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:08,335 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 14:38:08,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:08,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:08,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:08,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 14:38:08,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:38:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:38:08,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:08,433 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 14:38:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:08,580 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 14:38:08,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:38:08,581 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 14:38:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:08,581 INFO L225 Difference]: With dead ends: 48 [2018-10-04 14:38:08,582 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 14:38:08,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 42 [2018-10-04 14:38:08,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 14:38:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 14:38:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 14:38:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 14:38:08,585 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 14:38:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:08,585 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 14:38:08,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:38:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 14:38:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 14:38:08,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:08,585 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 14:38:08,586 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:08,586 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-04 14:38:08,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:08,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:08,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:08,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:08,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:09,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:09,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:09,886 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:09,916 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 14:38:09,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:09,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:10,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:10,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 14:38:10,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 14:38:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 14:38:10,046 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:10,046 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 14:38:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:10,115 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:38:10,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:38:10,115 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 14:38:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:10,116 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:38:10,116 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:38:10,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 43 [2018-10-04 14:38:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:38:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:38:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:38:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 14:38:10,119 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 14:38:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:10,119 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 14:38:10,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 14:38:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 14:38:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:38:10,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:10,120 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 14:38:10,120 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:10,120 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:10,120 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-04 14:38:10,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:10,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:10,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:10,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:10,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:11,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:11,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:11,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:11,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:11,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:11,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 14:38:11,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:38:11,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:38:11,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:11,260 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 14:38:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:11,388 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 14:38:11,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:38:11,388 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 14:38:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:11,389 INFO L225 Difference]: With dead ends: 50 [2018-10-04 14:38:11,389 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 14:38:11,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 44 [2018-10-04 14:38:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 14:38:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 14:38:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 14:38:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 14:38:11,392 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 14:38:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:11,392 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 14:38:11,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:38:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 14:38:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 14:38:11,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:11,393 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 14:38:11,393 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:11,394 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-04 14:38:11,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:11,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:11,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:11,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:11,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:12,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:12,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:12,288 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:12,314 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:12,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:12,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:12,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:12,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 14:38:12,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 14:38:12,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 14:38:12,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:12,416 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 14:38:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:12,483 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:38:12,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:38:12,484 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 14:38:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:12,484 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:38:12,484 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 14:38:12,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 45 [2018-10-04 14:38:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 14:38:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 14:38:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:38:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 14:38:12,488 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 14:38:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:12,488 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 14:38:12,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 14:38:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 14:38:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:38:12,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:12,489 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 14:38:12,489 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:12,489 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-04 14:38:12,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:12,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:12,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:12,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:12,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:13,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:13,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:13,142 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:13,177 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 14:38:13,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:13,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:13,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:13,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 14:38:13,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:38:13,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:38:13,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:13,307 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 14:38:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:13,750 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 14:38:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:38:13,751 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 14:38:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:13,752 INFO L225 Difference]: With dead ends: 52 [2018-10-04 14:38:13,752 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 14:38:13,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 46 [2018-10-04 14:38:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 14:38:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 14:38:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 14:38:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 14:38:13,754 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 14:38:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:13,755 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 14:38:13,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:38:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 14:38:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 14:38:13,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:13,756 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 14:38:13,756 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:13,756 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-04 14:38:13,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:13,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:13,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:13,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:13,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:15,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:15,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:15,135 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:15,164 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:15,165 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:15,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:15,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:15,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 14:38:15,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 14:38:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 14:38:15,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:15,300 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 14:38:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:15,376 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:38:15,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:38:15,377 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 14:38:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:15,378 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:38:15,378 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:38:15,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 47 [2018-10-04 14:38:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:38:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 14:38:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 14:38:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 14:38:15,381 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 14:38:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:15,381 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 14:38:15,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 14:38:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 14:38:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 14:38:15,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:15,381 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 14:38:15,382 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:15,382 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:15,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-04 14:38:15,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:15,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:15,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:15,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:15,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:16,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:16,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:16,286 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:16,323 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 14:38:16,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:16,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:16,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:16,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 14:38:16,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:38:16,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:38:16,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:16,436 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 14:38:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:16,508 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 14:38:16,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:38:16,515 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 14:38:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:16,516 INFO L225 Difference]: With dead ends: 54 [2018-10-04 14:38:16,516 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 14:38:16,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 48 [2018-10-04 14:38:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 14:38:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 14:38:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 14:38:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 14:38:16,519 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 14:38:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:16,519 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 14:38:16,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:38:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 14:38:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 14:38:16,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:16,520 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 14:38:16,520 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:16,520 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-04 14:38:16,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:16,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:16,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:16,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:16,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:17,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:17,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:17,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:17,454 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:38:17,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:17,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:17,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:17,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 14:38:17,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 14:38:17,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 14:38:17,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:17,569 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 14:38:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:17,629 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:38:17,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:38:17,629 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 14:38:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:17,630 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:38:17,630 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:38:17,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 49 [2018-10-04 14:38:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:38:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:38:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:38:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 14:38:17,636 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 14:38:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:17,636 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 14:38:17,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 14:38:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 14:38:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:38:17,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:17,637 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 14:38:17,637 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:17,637 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-04 14:38:17,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:17,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:17,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:17,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:17,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:19,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:19,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:19,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:19,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:19,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:19,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 14:38:19,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:38:19,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:38:19,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:19,161 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 14:38:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:19,240 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 14:38:19,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:38:19,241 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 14:38:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:19,241 INFO L225 Difference]: With dead ends: 56 [2018-10-04 14:38:19,241 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 14:38:19,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 50 [2018-10-04 14:38:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 14:38:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 14:38:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 14:38:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 14:38:19,243 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 14:38:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:19,244 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 14:38:19,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:38:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 14:38:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 14:38:19,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:19,244 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 14:38:19,244 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:19,245 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:19,245 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-04 14:38:19,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:19,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:19,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:19,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:19,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:20,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:20,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:20,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:20,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:20,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:20,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:20,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:20,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 14:38:20,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 14:38:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 14:38:20,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:20,322 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 14:38:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:20,414 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:38:20,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:38:20,415 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 14:38:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:20,415 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:38:20,415 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 14:38:20,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 51 [2018-10-04 14:38:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 14:38:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 14:38:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 14:38:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 14:38:20,418 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 14:38:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:20,418 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 14:38:20,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 14:38:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 14:38:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 14:38:20,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:20,419 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 14:38:20,419 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:20,419 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-04 14:38:20,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:20,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:20,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:20,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:20,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:21,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:21,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:21,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:21,375 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 14:38:21,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:21,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:21,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:21,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 14:38:21,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:38:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:38:21,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:21,526 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 14:38:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:21,598 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 14:38:21,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:38:21,598 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 14:38:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:21,599 INFO L225 Difference]: With dead ends: 58 [2018-10-04 14:38:21,599 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 14:38:21,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 52 [2018-10-04 14:38:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 14:38:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 14:38:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 14:38:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 14:38:21,602 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 14:38:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:21,603 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 14:38:21,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:38:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 14:38:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 14:38:21,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:21,603 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 14:38:21,603 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:21,604 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:21,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-04 14:38:21,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:21,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:21,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:21,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:21,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:22,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:22,946 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:22,953 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:22,983 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:22,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:22,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:23,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:23,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 14:38:23,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 14:38:23,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 14:38:23,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:23,172 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 14:38:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:23,262 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:38:23,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:38:23,262 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 14:38:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:23,263 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:38:23,263 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 14:38:23,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 53 [2018-10-04 14:38:23,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 14:38:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 14:38:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 14:38:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 14:38:23,266 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 14:38:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:23,267 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 14:38:23,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 14:38:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 14:38:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 14:38:23,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:23,267 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 14:38:23,267 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:23,268 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-04 14:38:23,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:23,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:23,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:23,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:23,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:24,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:24,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:24,168 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:24,209 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 14:38:24,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:24,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:24,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:24,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 14:38:24,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:38:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:38:24,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:24,407 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 14:38:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:24,588 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 14:38:24,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:38:24,589 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 14:38:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:24,589 INFO L225 Difference]: With dead ends: 60 [2018-10-04 14:38:24,589 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 14:38:24,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 54 [2018-10-04 14:38:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 14:38:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 14:38:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 14:38:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 14:38:24,591 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 14:38:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:24,592 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 14:38:24,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:38:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 14:38:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 14:38:24,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:24,592 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 14:38:24,592 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:24,592 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:24,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-04 14:38:24,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:24,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:24,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:24,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:24,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:25,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:25,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:25,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:25,551 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 14:38:25,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:25,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:25,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:25,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 14:38:25,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 14:38:25,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 14:38:25,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:25,784 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 14:38:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:25,854 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:38:25,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:38:25,854 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 14:38:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:25,855 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:38:25,855 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 14:38:25,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 55 [2018-10-04 14:38:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 14:38:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 14:38:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:38:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 14:38:25,858 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 14:38:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:25,858 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 14:38:25,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 14:38:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 14:38:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:38:25,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:25,859 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 14:38:25,859 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:25,859 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:25,860 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-04 14:38:25,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:25,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:25,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:25,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:25,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:27,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:27,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:27,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:27,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:27,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:27,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 14:38:27,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:38:27,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:38:27,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:27,380 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 14:38:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:27,492 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 14:38:27,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:38:27,493 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 14:38:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:27,493 INFO L225 Difference]: With dead ends: 62 [2018-10-04 14:38:27,493 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 14:38:27,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 56 [2018-10-04 14:38:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 14:38:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 14:38:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 14:38:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 14:38:27,496 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 14:38:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:27,496 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 14:38:27,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:38:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 14:38:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 14:38:27,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:27,496 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 14:38:27,497 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:27,497 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-04 14:38:27,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:27,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:27,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:27,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:27,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:28,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:28,772 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:28,780 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:28,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:28,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:28,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:29,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:29,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 14:38:29,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 14:38:29,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 14:38:29,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:29,127 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 14:38:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:29,196 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:38:29,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:38:29,197 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 14:38:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:29,197 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:38:29,198 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 14:38:29,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 57 [2018-10-04 14:38:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 14:38:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 14:38:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 14:38:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 14:38:29,203 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 14:38:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:29,203 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 14:38:29,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 14:38:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 14:38:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 14:38:29,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:29,204 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 14:38:29,204 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:29,204 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:29,204 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-04 14:38:29,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:29,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:29,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:29,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:29,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:30,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:30,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:30,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:30,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 14:38:30,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:30,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:30,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:30,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 14:38:30,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:38:30,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:38:30,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:30,814 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 14:38:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:30,903 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 14:38:30,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:38:30,904 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 14:38:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:30,904 INFO L225 Difference]: With dead ends: 64 [2018-10-04 14:38:30,905 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 14:38:30,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 58 [2018-10-04 14:38:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 14:38:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 14:38:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 14:38:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 14:38:30,907 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 14:38:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:30,907 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 14:38:30,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:38:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 14:38:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 14:38:30,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:30,909 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 14:38:30,909 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:30,909 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-04 14:38:30,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:30,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:30,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:30,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:30,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:32,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:32,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:32,264 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:32,300 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:32,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:32,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:32,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:32,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 14:38:32,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 14:38:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 14:38:32,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:32,442 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 14:38:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:32,535 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:38:32,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:38:32,536 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 14:38:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:32,536 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:38:32,537 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:38:32,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 59 [2018-10-04 14:38:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:38:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 14:38:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 14:38:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 14:38:32,539 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 14:38:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:32,539 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 14:38:32,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 14:38:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 14:38:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 14:38:32,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:32,540 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 14:38:32,541 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:32,541 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-04 14:38:32,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:32,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:32,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:32,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:32,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:33,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:33,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:33,831 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:33,880 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 14:38:33,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:33,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:34,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:34,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 14:38:34,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:38:34,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:38:34,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:34,076 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 14:38:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:34,172 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 14:38:34,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:38:34,173 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 14:38:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:34,173 INFO L225 Difference]: With dead ends: 66 [2018-10-04 14:38:34,173 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 14:38:34,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 60 [2018-10-04 14:38:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 14:38:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 14:38:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 14:38:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 14:38:34,176 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 14:38:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:34,177 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 14:38:34,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:38:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 14:38:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 14:38:34,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:34,177 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 14:38:34,178 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:34,178 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-04 14:38:34,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:34,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:34,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:34,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:34,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:37,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:37,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:37,483 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:37,535 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:38:37,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:37,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:37,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:37,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 14:38:37,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 14:38:37,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 14:38:37,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:37,678 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 14:38:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:37,779 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:38:37,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:38:37,779 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 14:38:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:37,780 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:38:37,780 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 14:38:37,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.7s impTime 61 [2018-10-04 14:38:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 14:38:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 14:38:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 14:38:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 14:38:37,784 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 14:38:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:37,784 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 14:38:37,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 14:38:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 14:38:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 14:38:37,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:37,785 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 14:38:37,785 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:37,785 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:37,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-04 14:38:37,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:37,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:37,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:37,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:37,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:39,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:39,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:39,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:39,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:39,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:39,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 14:38:39,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:38:39,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:38:39,309 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:39,309 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 14:38:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:39,417 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 14:38:39,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:38:39,417 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 14:38:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:39,418 INFO L225 Difference]: With dead ends: 68 [2018-10-04 14:38:39,418 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 14:38:39,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 62 [2018-10-04 14:38:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 14:38:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 14:38:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 14:38:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 14:38:39,421 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 14:38:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:39,421 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 14:38:39,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:38:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 14:38:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 14:38:39,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:39,422 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 14:38:39,422 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:39,422 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:39,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-04 14:38:39,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:39,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:39,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:39,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:39,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:41,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:41,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:41,581 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:41,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:41,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:41,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:41,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 14:38:41,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 14:38:41,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 14:38:41,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:41,728 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 14:38:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:41,875 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:38:41,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:38:41,875 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 14:38:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:41,876 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:38:41,876 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 14:38:41,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 63 [2018-10-04 14:38:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 14:38:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 14:38:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 14:38:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 14:38:41,878 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 14:38:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:41,878 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 14:38:41,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 14:38:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 14:38:41,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 14:38:41,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:41,879 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 14:38:41,879 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:41,880 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-04 14:38:41,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:41,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:41,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:43,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:43,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:43,476 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:43,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 14:38:43,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:43,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:43,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:43,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 14:38:43,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:38:43,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:38:43,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:43,731 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 14:38:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:43,881 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 14:38:43,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:38:43,881 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 14:38:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:43,882 INFO L225 Difference]: With dead ends: 70 [2018-10-04 14:38:43,882 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 14:38:43,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 64 [2018-10-04 14:38:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 14:38:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 14:38:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 14:38:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 14:38:43,885 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 14:38:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:43,885 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 14:38:43,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:38:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 14:38:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 14:38:43,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:43,886 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 14:38:43,886 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:43,886 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-04 14:38:43,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:43,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:43,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:43,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:43,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:45,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:45,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:45,514 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:45,569 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:45,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:45,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:45,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:45,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 14:38:45,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 14:38:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 14:38:45,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:45,718 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 14:38:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:45,808 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:38:45,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:38:45,808 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 14:38:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:45,809 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:38:45,809 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 14:38:45,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 65 [2018-10-04 14:38:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 14:38:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 14:38:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:38:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 14:38:45,812 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 14:38:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:45,813 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 14:38:45,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 14:38:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 14:38:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:38:45,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:45,813 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 14:38:45,813 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:45,813 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:45,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-04 14:38:45,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:45,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:45,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:45,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:45,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:46,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:46,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:46,972 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:47,024 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 14:38:47,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:47,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:47,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:47,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 14:38:47,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:38:47,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:38:47,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:47,195 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 14:38:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:47,426 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 14:38:47,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:38:47,427 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 14:38:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:47,427 INFO L225 Difference]: With dead ends: 72 [2018-10-04 14:38:47,428 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 14:38:47,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 66 [2018-10-04 14:38:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 14:38:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 14:38:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 14:38:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 14:38:47,430 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 14:38:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:47,431 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 14:38:47,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:38:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 14:38:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 14:38:47,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:47,431 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 14:38:47,432 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:47,432 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-04 14:38:47,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:47,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:47,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:47,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:47,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:49,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:49,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:49,377 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:49,433 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 14:38:49,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:49,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:51,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:51,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 14:38:51,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 14:38:51,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 14:38:51,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:51,286 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 14:38:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:51,397 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:38:51,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:38:51,397 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 14:38:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:51,398 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:38:51,398 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 14:38:51,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 1.7s impTime 67 [2018-10-04 14:38:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 14:38:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 14:38:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 14:38:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 14:38:51,401 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 14:38:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:51,401 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 14:38:51,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 14:38:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 14:38:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 14:38:51,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:51,402 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 14:38:51,402 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:51,402 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:51,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-04 14:38:51,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:51,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:51,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:51,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:51,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:53,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:53,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:53,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:53,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:53,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:53,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 14:38:53,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:38:53,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:38:53,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:53,449 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 14:38:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:53,568 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 14:38:53,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:38:53,568 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 14:38:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:53,569 INFO L225 Difference]: With dead ends: 74 [2018-10-04 14:38:53,569 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 14:38:53,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 68 [2018-10-04 14:38:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 14:38:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 14:38:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 14:38:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 14:38:53,571 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 14:38:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:53,571 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 14:38:53,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:38:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 14:38:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 14:38:53,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:53,572 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 14:38:53,572 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:53,572 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-04 14:38:53,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:53,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:53,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:53,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:55,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:55,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:55,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:55,219 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:55,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:55,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:55,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:55,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 14:38:55,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 14:38:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 14:38:55,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:55,402 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 14:38:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:55,537 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:38:55,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:38:55,538 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 14:38:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:55,539 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:38:55,539 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:38:55,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 69 [2018-10-04 14:38:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:38:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 14:38:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 14:38:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 14:38:55,541 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 14:38:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:55,542 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 14:38:55,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 14:38:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 14:38:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 14:38:55,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:55,542 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 14:38:55,543 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:55,543 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-04 14:38:55,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:55,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:55,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:55,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:57,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:57,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:57,499 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:57,556 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 14:38:57,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:57,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:57,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:57,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 14:38:57,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:38:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:38:57,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:57,962 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 14:38:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:58,135 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 14:38:58,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:38:58,135 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 14:38:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:58,136 INFO L225 Difference]: With dead ends: 76 [2018-10-04 14:38:58,137 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 14:38:58,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 70 [2018-10-04 14:38:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 14:38:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 14:38:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 14:38:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 14:38:58,140 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 14:38:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:58,140 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 14:38:58,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:38:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 14:38:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 14:38:58,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:58,141 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 14:38:58,141 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:58,142 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-04 14:38:58,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:58,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:58,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:58,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:58,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:00,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:00,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:00,384 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:00,421 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:00,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:00,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:00,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:00,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 14:39:00,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 14:39:00,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 14:39:00,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:00,591 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 14:39:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:00,766 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:39:00,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:39:00,767 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 14:39:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:00,767 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:39:00,767 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 14:39:00,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 71 [2018-10-04 14:39:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 14:39:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 14:39:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 14:39:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 14:39:00,770 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 14:39:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:00,771 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 14:39:00,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 14:39:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 14:39:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 14:39:00,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:00,772 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 14:39:00,772 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:00,772 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-04 14:39:00,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:00,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:00,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:00,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:00,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:02,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:02,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:02,019 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:02,088 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 14:39:02,088 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:02,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:02,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:02,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 14:39:02,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 14:39:02,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 14:39:02,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:02,448 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 14:39:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:02,548 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 14:39:02,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 14:39:02,548 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 14:39:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:02,549 INFO L225 Difference]: With dead ends: 78 [2018-10-04 14:39:02,549 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 14:39:02,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 72 [2018-10-04 14:39:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 14:39:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 14:39:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 14:39:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 14:39:02,553 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 14:39:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:02,553 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 14:39:02,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 14:39:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 14:39:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 14:39:02,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:02,554 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 14:39:02,554 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:02,554 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-04 14:39:02,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:02,555 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:04,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:04,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:04,466 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:04,531 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:39:04,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:04,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:04,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:04,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 14:39:04,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 14:39:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 14:39:04,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:04,741 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-04 14:39:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:04,851 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 14:39:04,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 14:39:04,852 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-04 14:39:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:04,853 INFO L225 Difference]: With dead ends: 79 [2018-10-04 14:39:04,853 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 14:39:04,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 73 [2018-10-04 14:39:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 14:39:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 14:39:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 14:39:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 14:39:04,856 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 14:39:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:04,857 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 14:39:04,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 14:39:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 14:39:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 14:39:04,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:04,858 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 14:39:04,858 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:04,858 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-04 14:39:04,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:04,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:04,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:07,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:07,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:07,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:07,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:07,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:07,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 14:39:07,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 14:39:07,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 14:39:07,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:07,380 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-04 14:39:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:07,524 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 14:39:07,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 14:39:07,525 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-04 14:39:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:07,526 INFO L225 Difference]: With dead ends: 80 [2018-10-04 14:39:07,526 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 14:39:07,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 74 [2018-10-04 14:39:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 14:39:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 14:39:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 14:39:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 14:39:07,528 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 14:39:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:07,529 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 14:39:07,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 14:39:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 14:39:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 14:39:07,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:07,530 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 14:39:07,530 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:07,530 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:07,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-04 14:39:07,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:07,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:07,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:09,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:09,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:09,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:39:09,753 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:39:09,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:09,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:09,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:09,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 14:39:09,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 14:39:09,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 14:39:09,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:09,897 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-04 14:39:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:10,045 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 14:39:10,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 14:39:10,045 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-04 14:39:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:10,046 INFO L225 Difference]: With dead ends: 81 [2018-10-04 14:39:10,046 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 14:39:10,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 75 [2018-10-04 14:39:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 14:39:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 14:39:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 14:39:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 14:39:10,048 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 14:39:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:10,048 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 14:39:10,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 14:39:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 14:39:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 14:39:10,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:10,049 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 14:39:10,049 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:10,050 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:10,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-04 14:39:10,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:10,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:10,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:10,051 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:10,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:12,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:12,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:12,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:39:12,303 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 14:39:12,304 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:12,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:12,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:12,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 14:39:12,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 14:39:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 14:39:12,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:12,461 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-04 14:39:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:12,615 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 14:39:12,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 14:39:12,615 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-04 14:39:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:12,616 INFO L225 Difference]: With dead ends: 82 [2018-10-04 14:39:12,616 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 14:39:12,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 76 [2018-10-04 14:39:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 14:39:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 14:39:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 14:39:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 14:39:12,618 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 14:39:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:12,618 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 14:39:12,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 14:39:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 14:39:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 14:39:12,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:12,619 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 14:39:12,619 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:12,619 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-04 14:39:12,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:12,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:12,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:12,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:12,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:14,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:14,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:14,767 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:14,809 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:14,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:14,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:14,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:14,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 14:39:14,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 14:39:14,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 14:39:14,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:14,964 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-04 14:39:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:16,208 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 14:39:16,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 14:39:16,208 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-04 14:39:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:16,209 INFO L225 Difference]: With dead ends: 83 [2018-10-04 14:39:16,209 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 14:39:16,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 77 [2018-10-04 14:39:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 14:39:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 14:39:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 14:39:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 14:39:16,212 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 14:39:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:16,212 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 14:39:16,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 14:39:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 14:39:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 14:39:16,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:16,213 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 14:39:16,213 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:16,213 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:16,213 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-04 14:39:16,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:16,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:16,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:16,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:16,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:18,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:18,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:18,406 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:18,472 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 14:39:18,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:18,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:18,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:18,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 14:39:18,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 14:39:18,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 14:39:18,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:18,738 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-04 14:39:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:18,877 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 14:39:18,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 14:39:18,877 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-04 14:39:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:18,878 INFO L225 Difference]: With dead ends: 84 [2018-10-04 14:39:18,878 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 14:39:18,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 78 [2018-10-04 14:39:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 14:39:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 14:39:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 14:39:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 14:39:18,880 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 14:39:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:18,880 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 14:39:18,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 14:39:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 14:39:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 14:39:18,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:18,881 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 14:39:18,882 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:18,882 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-04 14:39:18,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:18,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:18,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:18,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:18,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:20,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:20,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:20,626 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:20,699 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 14:39:20,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:20,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:20,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:20,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 14:39:20,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 14:39:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 14:39:20,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:20,866 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-04 14:39:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:21,021 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 14:39:21,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 14:39:21,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-04 14:39:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:21,022 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:39:21,022 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 14:39:21,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 79 [2018-10-04 14:39:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 14:39:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 14:39:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 14:39:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 14:39:21,026 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 14:39:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:21,026 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 14:39:21,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 14:39:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 14:39:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 14:39:21,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:21,027 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 14:39:21,027 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:21,027 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:21,027 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-04 14:39:21,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:21,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:21,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:21,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:21,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:23,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:23,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:23,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:23,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:24,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:24,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 14:39:24,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 14:39:24,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 14:39:24,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:24,104 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-04 14:39:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:24,296 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 14:39:24,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 14:39:24,296 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-04 14:39:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:24,297 INFO L225 Difference]: With dead ends: 86 [2018-10-04 14:39:24,297 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 14:39:24,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 80 [2018-10-04 14:39:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 14:39:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 14:39:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 14:39:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 14:39:24,299 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 14:39:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:24,299 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 14:39:24,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 14:39:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 14:39:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 14:39:24,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:24,300 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 14:39:24,300 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:24,301 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-04 14:39:24,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:24,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:24,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:26,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:26,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:26,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:39:26,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:39:26,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:26,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:27,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:27,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 14:39:27,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 14:39:27,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 14:39:27,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:27,443 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-04 14:39:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:27,558 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 14:39:27,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 14:39:27,558 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-04 14:39:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:27,559 INFO L225 Difference]: With dead ends: 87 [2018-10-04 14:39:27,559 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 14:39:27,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.9s impTime 81 [2018-10-04 14:39:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 14:39:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 14:39:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 14:39:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 14:39:27,562 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 14:39:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:27,563 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 14:39:27,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 14:39:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 14:39:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 14:39:27,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:27,563 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 14:39:27,564 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:27,564 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-04 14:39:27,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:27,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:27,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:27,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:27,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:30,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:30,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:30,052 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:39:30,126 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 14:39:30,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:30,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:30,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:30,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 14:39:30,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 14:39:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 14:39:30,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:30,312 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-04 14:39:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:30,481 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 14:39:30,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 14:39:30,481 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-04 14:39:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:30,482 INFO L225 Difference]: With dead ends: 88 [2018-10-04 14:39:30,482 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 14:39:30,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 82 [2018-10-04 14:39:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 14:39:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 14:39:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 14:39:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 14:39:30,485 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 14:39:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:30,485 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 14:39:30,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 14:39:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 14:39:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 14:39:30,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:30,486 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 14:39:30,486 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:30,486 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:30,486 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-04 14:39:30,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:30,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:30,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:30,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:30,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:32,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:32,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:32,904 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:32,953 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:32,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:32,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:33,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:33,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 14:39:33,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 14:39:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 14:39:33,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:33,258 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-04 14:39:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:33,688 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 14:39:33,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 14:39:33,688 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-04 14:39:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:33,689 INFO L225 Difference]: With dead ends: 89 [2018-10-04 14:39:33,689 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 14:39:33,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 83 [2018-10-04 14:39:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 14:39:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 14:39:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 14:39:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 14:39:33,692 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 14:39:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:33,692 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 14:39:33,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 14:39:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 14:39:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 14:39:33,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:33,693 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 14:39:33,693 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:33,693 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-04 14:39:33,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:33,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:33,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:33,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:33,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:36,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:36,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:36,853 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:36,927 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 14:39:36,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:36,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:37,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:37,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 14:39:37,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 14:39:37,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 14:39:37,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:37,099 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-04 14:39:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:37,315 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 14:39:37,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 14:39:37,315 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-04 14:39:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:37,316 INFO L225 Difference]: With dead ends: 90 [2018-10-04 14:39:37,316 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 14:39:37,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 84 [2018-10-04 14:39:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 14:39:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 14:39:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 14:39:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 14:39:37,319 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 14:39:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:37,319 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 14:39:37,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 14:39:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 14:39:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 14:39:37,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:37,320 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 14:39:37,320 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:37,320 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-04 14:39:37,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:37,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:37,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:37,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:37,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:39,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:39,188 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:39,201 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:39,281 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:39:39,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:39,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:39,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:39,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 14:39:39,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 14:39:39,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 14:39:39,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:39,454 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-04 14:39:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:39,794 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 14:39:39,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 14:39:39,795 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-04 14:39:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:39,796 INFO L225 Difference]: With dead ends: 91 [2018-10-04 14:39:39,796 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 14:39:39,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 85 [2018-10-04 14:39:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 14:39:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 14:39:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 14:39:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 14:39:39,799 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 14:39:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:39,800 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 14:39:39,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 14:39:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 14:39:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 14:39:39,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:39,800 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 14:39:39,801 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:39,801 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-04 14:39:39,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:39,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:39,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:39,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:39,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:41,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:41,727 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:41,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:41,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:41,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:41,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 14:39:41,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 14:39:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 14:39:41,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:41,952 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-04 14:39:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:42,080 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 14:39:42,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 14:39:42,080 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-04 14:39:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:42,081 INFO L225 Difference]: With dead ends: 92 [2018-10-04 14:39:42,082 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 14:39:42,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 86 [2018-10-04 14:39:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 14:39:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 14:39:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 14:39:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 14:39:42,085 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 14:39:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:42,085 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 14:39:42,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 14:39:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 14:39:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 14:39:42,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:42,086 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 14:39:42,086 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:42,086 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-04 14:39:42,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:42,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:42,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:44,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:44,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:44,298 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:39:44,346 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:39:44,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:44,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:44,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:44,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 14:39:44,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 14:39:44,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 14:39:44,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:44,525 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-04 14:39:44,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:44,667 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 14:39:44,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 14:39:44,667 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-04 14:39:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:44,668 INFO L225 Difference]: With dead ends: 93 [2018-10-04 14:39:44,668 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 14:39:44,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 87 [2018-10-04 14:39:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 14:39:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 14:39:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 14:39:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 14:39:44,671 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 14:39:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:44,671 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 14:39:44,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 14:39:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 14:39:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 14:39:44,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:44,672 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 14:39:44,672 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:44,672 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-04 14:39:44,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:44,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:44,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:47,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:47,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:47,278 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:39:47,361 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 14:39:47,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:47,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:47,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:47,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 14:39:47,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 14:39:47,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 14:39:47,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:47,540 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-04 14:39:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:47,717 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 14:39:47,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 14:39:47,717 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-04 14:39:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:47,717 INFO L225 Difference]: With dead ends: 94 [2018-10-04 14:39:47,717 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 14:39:47,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 88 [2018-10-04 14:39:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 14:39:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 14:39:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 14:39:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 14:39:47,719 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 14:39:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:47,720 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 14:39:47,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 14:39:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 14:39:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 14:39:47,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:47,721 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 14:39:47,721 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:47,721 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:47,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-04 14:39:47,721 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:47,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:47,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:47,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:47,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:50,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:50,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:50,190 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:50,239 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:50,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:50,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:50,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:50,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 14:39:50,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 14:39:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 14:39:50,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:50,419 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-04 14:39:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:50,592 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 14:39:50,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 14:39:50,592 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-04 14:39:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:50,592 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:39:50,592 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:39:50,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 89 [2018-10-04 14:39:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:39:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 14:39:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 14:39:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 14:39:50,594 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 14:39:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:50,595 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 14:39:50,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 14:39:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 14:39:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 14:39:50,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:50,595 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 14:39:50,595 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:50,596 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:50,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-04 14:39:50,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:50,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:50,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:50,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:50,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:52,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:52,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:52,812 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:52,950 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 14:39:52,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:52,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:53,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:53,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 14:39:53,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 14:39:53,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 14:39:53,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:53,181 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-04 14:39:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:53,313 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 14:39:53,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 14:39:53,313 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-04 14:39:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:53,314 INFO L225 Difference]: With dead ends: 96 [2018-10-04 14:39:53,314 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 14:39:53,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 90 [2018-10-04 14:39:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 14:39:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 14:39:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 14:39:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 14:39:53,317 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 14:39:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:53,318 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 14:39:53,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 14:39:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 14:39:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 14:39:53,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:53,318 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 14:39:53,318 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:53,319 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:53,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-04 14:39:53,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:53,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:53,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:53,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:53,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:55,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:55,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:55,144 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:55,224 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 14:39:55,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:55,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:55,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:55,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 14:39:55,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 14:39:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 14:39:55,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:55,413 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-04 14:39:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:55,567 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 14:39:55,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 14:39:55,568 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-04 14:39:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:55,568 INFO L225 Difference]: With dead ends: 97 [2018-10-04 14:39:55,568 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 14:39:55,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 91 [2018-10-04 14:39:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 14:39:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 14:39:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 14:39:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 14:39:55,571 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 14:39:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:55,572 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 14:39:55,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 14:39:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 14:39:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 14:39:55,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:55,573 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 14:39:55,573 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:55,573 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:55,573 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-04 14:39:55,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:55,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:55,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:55,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:55,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:58,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:58,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:39:58,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:58,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:58,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:58,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 14:39:58,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 14:39:58,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 14:39:58,620 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:58,620 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-04 14:39:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:58,843 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 14:39:58,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 14:39:58,844 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-04 14:39:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:58,844 INFO L225 Difference]: With dead ends: 98 [2018-10-04 14:39:58,844 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 14:39:58,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 92 [2018-10-04 14:39:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 14:39:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 14:39:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 14:39:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 14:39:58,846 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 14:39:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:58,847 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 14:39:58,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 14:39:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 14:39:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 14:39:58,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:58,847 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 14:39:58,847 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:58,848 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-04 14:39:58,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:58,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:58,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:58,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:02,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:02,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:02,208 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:40:02,257 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:40:02,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:02,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:02,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:02,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 14:40:02,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 14:40:02,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 14:40:02,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:02,502 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-04 14:40:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:02,730 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 14:40:02,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 14:40:02,730 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-04 14:40:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:02,731 INFO L225 Difference]: With dead ends: 99 [2018-10-04 14:40:02,731 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 14:40:02,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 93 [2018-10-04 14:40:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 14:40:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 14:40:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 14:40:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 14:40:02,733 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 14:40:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:02,733 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 14:40:02,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 14:40:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 14:40:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 14:40:02,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:02,734 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 14:40:02,734 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:02,734 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-04 14:40:02,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:02,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:02,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:02,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:02,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:04,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:04,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:04,731 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:40:04,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 14:40:04,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:04,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:05,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:05,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 14:40:05,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 14:40:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 14:40:05,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:05,013 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-04 14:40:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:05,176 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 14:40:05,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 14:40:05,177 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-04 14:40:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:05,178 INFO L225 Difference]: With dead ends: 100 [2018-10-04 14:40:05,178 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 14:40:05,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 94 [2018-10-04 14:40:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 14:40:05,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 14:40:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 14:40:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 14:40:05,180 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 14:40:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:05,180 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 14:40:05,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 14:40:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 14:40:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 14:40:05,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:05,181 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 14:40:05,181 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:05,181 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-04 14:40:05,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:05,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:05,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:05,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:05,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:08,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:08,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:08,997 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:40:09,051 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:40:09,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:09,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:09,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:09,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 14:40:09,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 14:40:09,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 14:40:09,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:09,247 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-04 14:40:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:09,517 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 14:40:09,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 14:40:09,518 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-04 14:40:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:09,519 INFO L225 Difference]: With dead ends: 101 [2018-10-04 14:40:09,519 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 14:40:09,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.5s impTime 95 [2018-10-04 14:40:09,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 14:40:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 14:40:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 14:40:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 14:40:09,522 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 14:40:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:09,522 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 14:40:09,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 14:40:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 14:40:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 14:40:09,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:09,523 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 14:40:09,524 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:09,524 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:09,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-04 14:40:09,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:09,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:09,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:11,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:11,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:11,593 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:40:11,682 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 14:40:11,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:11,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:11,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:11,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 14:40:11,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 14:40:11,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 14:40:11,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:11,877 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-04 14:40:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:12,068 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 14:40:12,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 14:40:12,068 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-04 14:40:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:12,069 INFO L225 Difference]: With dead ends: 102 [2018-10-04 14:40:12,069 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 14:40:12,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 96 [2018-10-04 14:40:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 14:40:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 14:40:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 14:40:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 14:40:12,073 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 14:40:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:12,073 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 14:40:12,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 14:40:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 14:40:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 14:40:12,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:12,074 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 14:40:12,075 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:12,075 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-04 14:40:12,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:12,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:12,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:12,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:12,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:15,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:15,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:15,077 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:40:15,167 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:40:15,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:15,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:15,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:15,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 14:40:15,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 14:40:15,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 14:40:15,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:15,361 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-04 14:40:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:15,560 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 14:40:15,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 14:40:15,560 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-04 14:40:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:15,561 INFO L225 Difference]: With dead ends: 103 [2018-10-04 14:40:15,561 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 14:40:15,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 97 [2018-10-04 14:40:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 14:40:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 14:40:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 14:40:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 14:40:15,565 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 14:40:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:15,565 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 14:40:15,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 14:40:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 14:40:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 14:40:15,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:15,566 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 14:40:15,566 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:15,566 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:15,566 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-04 14:40:15,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:15,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:15,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:15,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:15,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:19,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:19,678 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:19,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:19,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:19,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:19,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 14:40:19,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 14:40:19,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 14:40:19,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:19,928 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-04 14:40:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:20,206 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 14:40:20,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 14:40:20,206 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-04 14:40:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:20,207 INFO L225 Difference]: With dead ends: 104 [2018-10-04 14:40:20,208 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 14:40:20,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.8s impTime 98 [2018-10-04 14:40:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 14:40:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 14:40:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 14:40:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 14:40:20,211 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 14:40:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:20,211 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 14:40:20,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 14:40:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 14:40:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 14:40:20,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:20,211 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 14:40:20,212 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:20,212 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-04 14:40:20,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:20,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:20,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:20,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:20,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:23,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:23,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:23,135 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:40:23,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:40:23,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:23,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:23,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:23,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 14:40:23,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 14:40:23,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 14:40:23,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:23,380 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-04 14:40:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:23,647 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 14:40:23,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 14:40:23,648 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-04 14:40:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:23,649 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:40:23,649 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 14:40:23,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 99 [2018-10-04 14:40:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 14:40:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 14:40:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 14:40:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 14:40:23,652 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 14:40:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:23,652 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 14:40:23,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 14:40:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 14:40:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 14:40:23,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:23,653 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 14:40:23,653 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:23,653 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:23,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-04 14:40:23,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:23,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:23,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:23,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:23,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:26,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:26,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:26,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:40:26,261 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 14:40:26,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:26,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:26,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:26,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 14:40:26,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 14:40:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 14:40:26,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:26,464 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-04 14:40:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:26,683 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 14:40:26,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 14:40:26,684 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-04 14:40:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:26,684 INFO L225 Difference]: With dead ends: 106 [2018-10-04 14:40:26,685 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 14:40:26,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 100 [2018-10-04 14:40:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 14:40:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 14:40:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 14:40:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 14:40:26,688 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 14:40:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:26,688 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 14:40:26,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 14:40:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 14:40:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 14:40:26,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:26,689 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 14:40:26,689 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:26,689 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:26,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-04 14:40:26,689 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:26,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:26,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:26,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:26,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:29,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:29,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:29,195 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:40:29,251 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:40:29,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:29,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:29,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:29,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 14:40:29,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 14:40:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 14:40:29,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:29,454 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-04 14:40:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:29,675 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 14:40:29,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 14:40:29,675 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-04 14:40:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:29,676 INFO L225 Difference]: With dead ends: 107 [2018-10-04 14:40:29,677 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 14:40:29,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 101 [2018-10-04 14:40:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 14:40:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 14:40:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 14:40:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 14:40:29,680 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 14:40:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:29,680 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 14:40:29,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 14:40:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 14:40:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 14:40:29,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:29,681 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 14:40:29,681 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:29,681 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-04 14:40:29,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:29,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:29,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:29,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:29,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:32,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:32,337 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:32,344 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:40:32,447 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 14:40:32,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:32,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:32,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:32,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 14:40:32,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 14:40:32,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 14:40:32,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:32,681 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-04 14:40:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:32,906 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 14:40:32,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 14:40:32,906 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-04 14:40:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:32,907 INFO L225 Difference]: With dead ends: 108 [2018-10-04 14:40:32,907 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 14:40:32,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 102 [2018-10-04 14:40:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 14:40:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 14:40:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 14:40:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 14:40:32,910 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 14:40:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:32,911 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 14:40:32,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 14:40:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 14:40:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 14:40:32,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:32,911 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 14:40:32,912 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:32,912 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-04 14:40:32,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:32,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:32,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:32,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:32,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:36,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:36,116 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:36,122 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:40:36,216 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 14:40:36,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:36,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:36,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:36,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 14:40:36,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 14:40:36,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 14:40:36,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:36,438 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-04 14:40:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:36,710 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 14:40:36,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 14:40:36,710 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-04 14:40:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:36,711 INFO L225 Difference]: With dead ends: 109 [2018-10-04 14:40:36,711 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 14:40:36,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 103 [2018-10-04 14:40:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 14:40:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 14:40:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 14:40:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 14:40:36,715 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 14:40:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:36,715 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 14:40:36,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 14:40:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 14:40:36,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 14:40:36,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:36,716 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 14:40:36,716 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:36,716 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-04 14:40:36,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:36,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:36,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:36,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:36,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:41,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:41,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:41,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:41,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:41,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:41,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 14:40:41,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 14:40:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 14:40:41,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:41,542 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-04 14:40:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:41,854 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 14:40:41,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 14:40:41,855 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-04 14:40:41,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:41,855 INFO L225 Difference]: With dead ends: 110 [2018-10-04 14:40:41,855 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 14:40:41,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.2s impTime 104 [2018-10-04 14:40:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 14:40:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 14:40:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 14:40:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 14:40:41,857 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 14:40:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:41,857 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 14:40:41,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 14:40:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 14:40:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 14:40:41,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:41,858 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 14:40:41,858 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:41,858 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-04 14:40:41,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:41,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:41,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:41,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:41,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:45,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:45,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:45,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:40:45,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:40:45,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:45,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:46,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:46,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 14:40:46,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 14:40:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 14:40:46,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:46,060 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-04 14:40:46,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:46,308 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 14:40:46,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 14:40:46,308 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-04 14:40:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:46,309 INFO L225 Difference]: With dead ends: 111 [2018-10-04 14:40:46,309 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 14:40:46,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.5s impTime 105 [2018-10-04 14:40:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 14:40:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 14:40:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 14:40:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 14:40:46,311 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 14:40:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:46,311 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 14:40:46,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 14:40:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 14:40:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 14:40:46,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:46,312 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 14:40:46,312 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:46,312 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:46,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-04 14:40:46,312 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:46,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:46,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:46,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:46,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:48,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:48,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:48,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:40:48,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 14:40:48,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:48,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:49,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:49,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 14:40:49,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 14:40:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 14:40:49,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:49,147 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-04 14:40:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:49,373 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 14:40:49,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 14:40:49,374 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-04 14:40:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:49,374 INFO L225 Difference]: With dead ends: 112 [2018-10-04 14:40:49,375 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 14:40:49,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 106 [2018-10-04 14:40:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 14:40:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 14:40:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 14:40:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 14:40:49,377 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 14:40:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:49,377 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 14:40:49,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 14:40:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 14:40:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 14:40:49,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:49,378 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 14:40:49,378 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:49,378 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-04 14:40:49,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:49,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:49,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:49,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:49,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:54,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:54,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:54,282 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:40:54,343 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:40:54,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:54,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:54,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:54,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 14:40:54,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 14:40:54,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 14:40:54,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:54,556 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-04 14:40:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:54,882 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 14:40:54,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 14:40:54,883 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-04 14:40:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:54,883 INFO L225 Difference]: With dead ends: 113 [2018-10-04 14:40:54,883 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 14:40:54,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.6s impTime 107 [2018-10-04 14:40:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 14:40:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 14:40:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 14:40:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 14:40:54,886 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-04 14:40:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:54,886 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 14:40:54,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 14:40:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 14:40:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 14:40:54,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:54,887 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-04 14:40:54,887 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:54,887 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-04 14:40:54,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:54,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:54,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:54,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:58,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:58,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:40:58,258 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:40:58,365 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 14:40:58,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:58,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:58,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:58,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 14:40:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 14:40:58,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 14:40:58,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:58,585 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-04 14:40:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:58,869 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-04 14:40:58,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 14:40:58,870 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-04 14:40:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:58,870 INFO L225 Difference]: With dead ends: 114 [2018-10-04 14:40:58,870 INFO L226 Difference]: Without dead ends: 112 [2018-10-04 14:40:58,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 108 [2018-10-04 14:40:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-04 14:40:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-04 14:40:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-04 14:40:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-04 14:40:58,872 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-04 14:40:58,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:58,873 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-04 14:40:58,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 14:40:58,873 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-04 14:40:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-04 14:40:58,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:58,873 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-04 14:40:58,873 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:58,874 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:58,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-04 14:40:58,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:58,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:58,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:58,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:58,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:03,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:03,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:04,004 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:41:04,106 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 14:41:04,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:04,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:04,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:04,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 14:41:04,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 14:41:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 14:41:04,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:04,322 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-04 14:41:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:04,692 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 14:41:04,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 14:41:04,693 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-04 14:41:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:04,693 INFO L225 Difference]: With dead ends: 115 [2018-10-04 14:41:04,693 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 14:41:04,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.8s impTime 109 [2018-10-04 14:41:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 14:41:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 14:41:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 14:41:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 14:41:04,696 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-04 14:41:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:04,696 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 14:41:04,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 14:41:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 14:41:04,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 14:41:04,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:04,697 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-04 14:41:04,697 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:04,698 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:04,698 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-04 14:41:04,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:04,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:04,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:04,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:04,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:07,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:07,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:07,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:41:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:07,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:08,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:08,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 14:41:08,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 14:41:08,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 14:41:08,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:08,178 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-04 14:41:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:08,473 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-04 14:41:08,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 14:41:08,473 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-04 14:41:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:08,473 INFO L225 Difference]: With dead ends: 116 [2018-10-04 14:41:08,474 INFO L226 Difference]: Without dead ends: 114 [2018-10-04 14:41:08,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 110 [2018-10-04 14:41:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-04 14:41:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-04 14:41:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-04 14:41:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-04 14:41:08,476 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-04 14:41:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:08,476 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-04 14:41:08,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 14:41:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-04 14:41:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-04 14:41:08,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:08,477 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-04 14:41:08,477 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:08,478 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:08,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-04 14:41:08,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:08,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:08,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:41:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:12,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:12,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:12,156 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:41:12,215 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:41:12,215 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:12,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:12,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:12,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 14:41:12,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 14:41:12,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 14:41:12,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:12,425 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-04 14:41:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:12,704 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 14:41:12,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 14:41:12,705 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-04 14:41:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:12,705 INFO L225 Difference]: With dead ends: 117 [2018-10-04 14:41:12,705 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 14:41:12,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.3s impTime 111 [2018-10-04 14:41:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 14:41:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 14:41:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 14:41:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 14:41:12,708 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-04 14:41:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:12,708 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 14:41:12,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 14:41:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 14:41:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 14:41:12,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:12,709 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-04 14:41:12,709 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:12,709 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-04 14:41:12,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:12,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:12,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:12,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:12,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:16,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:16,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:16,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:41:16,290 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-04 14:41:16,291 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:16,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:16,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:16,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 14:41:16,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 14:41:16,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 14:41:16,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:16,521 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-04 14:41:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:16,752 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-04 14:41:16,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 14:41:16,753 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-04 14:41:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:16,753 INFO L225 Difference]: With dead ends: 118 [2018-10-04 14:41:16,753 INFO L226 Difference]: Without dead ends: 116 [2018-10-04 14:41:16,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime 112 [2018-10-04 14:41:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-04 14:41:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-04 14:41:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-04 14:41:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-04 14:41:16,756 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-04 14:41:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:16,756 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-04 14:41:16,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 14:41:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-04 14:41:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-04 14:41:16,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:16,757 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-04 14:41:16,758 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:16,758 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-04 14:41:16,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:16,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:16,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:16,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:16,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:21,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:21,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:21,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:41:21,925 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:41:21,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:21,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:22,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:22,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-04 14:41:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-04 14:41:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-04 14:41:22,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:22,344 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-04 14:41:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:22,733 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 14:41:22,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-04 14:41:22,734 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-04 14:41:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:22,734 INFO L225 Difference]: With dead ends: 119 [2018-10-04 14:41:22,734 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 14:41:22,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time 4.8s impTime 113 [2018-10-04 14:41:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 14:41:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 14:41:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 14:41:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 14:41:22,736 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-04 14:41:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:22,737 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 14:41:22,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-04 14:41:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 14:41:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 14:41:22,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:22,738 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-04 14:41:22,738 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:22,738 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-10-04 14:41:22,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:22,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:22,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:22,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:22,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:25,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:25,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:25,382 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:41:25,497 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-04 14:41:25,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:25,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:25,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:25,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-04 14:41:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-04 14:41:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-04 14:41:25,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:25,873 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-04 14:41:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:26,185 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-04 14:41:26,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-04 14:41:26,185 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-04 14:41:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:26,186 INFO L225 Difference]: With dead ends: 120 [2018-10-04 14:41:26,186 INFO L226 Difference]: Without dead ends: 118 [2018-10-04 14:41:26,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 114 [2018-10-04 14:41:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-04 14:41:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-04 14:41:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-04 14:41:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-04 14:41:26,190 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-04 14:41:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:26,190 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-04 14:41:26,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-04 14:41:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-04 14:41:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-04 14:41:26,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:26,191 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-04 14:41:26,191 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:26,191 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-10-04 14:41:26,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:26,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:26,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:26,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:26,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:29,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:29,010 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:29,017 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:41:29,128 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-04 14:41:29,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:29,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:29,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:29,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-04 14:41:29,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-04 14:41:29,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-04 14:41:29,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:29,368 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-04 14:41:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:29,751 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 14:41:29,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-04 14:41:29,751 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-04 14:41:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:29,751 INFO L225 Difference]: With dead ends: 121 [2018-10-04 14:41:29,752 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 14:41:29,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 115 [2018-10-04 14:41:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 14:41:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 14:41:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 14:41:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 14:41:29,754 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-04 14:41:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:29,754 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 14:41:29,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-04 14:41:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 14:41:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 14:41:29,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:29,754 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-04 14:41:29,755 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:29,755 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:29,755 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-10-04 14:41:29,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:29,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:29,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:29,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:29,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:31,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:31,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:31,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:41:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:31,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:31,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:31,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-04 14:41:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-04 14:41:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-04 14:41:31,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:31,835 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-10-04 14:41:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:32,076 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-04 14:41:32,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-04 14:41:32,076 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-10-04 14:41:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:32,077 INFO L225 Difference]: With dead ends: 122 [2018-10-04 14:41:32,077 INFO L226 Difference]: Without dead ends: 120 [2018-10-04 14:41:32,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 116 [2018-10-04 14:41:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-04 14:41:32,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-04 14:41:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-04 14:41:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-04 14:41:32,079 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-04 14:41:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:32,079 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-04 14:41:32,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-04 14:41:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-04 14:41:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-04 14:41:32,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:32,080 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-04 14:41:32,080 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:32,080 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-10-04 14:41:32,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:32,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:32,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:32,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:41:32,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:34,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:34,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:34,354 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:41:34,417 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:41:34,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:34,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:34,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:34,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-04 14:41:34,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-04 14:41:34,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-04 14:41:34,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:34,641 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-10-04 14:41:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:34,939 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 14:41:34,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-04 14:41:34,939 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-10-04 14:41:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:34,940 INFO L225 Difference]: With dead ends: 123 [2018-10-04 14:41:34,940 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 14:41:34,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 117 [2018-10-04 14:41:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 14:41:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 14:41:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 14:41:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 14:41:34,942 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-04 14:41:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:34,942 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 14:41:34,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-04 14:41:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 14:41:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 14:41:34,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:34,943 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-04 14:41:34,943 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:34,943 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-10-04 14:41:34,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:34,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:34,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:34,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:34,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-04 14:41:36,522 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:41:36,527 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:41:36,528 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:41:36 BoogieIcfgContainer [2018-10-04 14:41:36,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:41:36,529 INFO L168 Benchmark]: Toolchain (without parser) took 236353.59 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -136.3 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 359.7 MB). Peak memory consumption was 223.4 MB. Max. memory is 7.1 GB. [2018-10-04 14:41:36,530 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:36,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:36,531 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:36,531 INFO L168 Benchmark]: RCFGBuilder took 305.04 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. [2018-10-04 14:41:36,532 INFO L168 Benchmark]: TraceAbstraction took 235971.74 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -136.3 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.6 MB). Peak memory consumption was 202.2 MB. Max. memory is 7.1 GB. [2018-10-04 14:41:36,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.87 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 27.95 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 305.04 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 235971.74 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -136.3 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.6 MB). Peak memory consumption was 202.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 26). Cancelled while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 117, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 119 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 235.8s OverallTime, 118 OverallIterations, 117 TraceHistogramMax, 18.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 353 SDtfs, 2 SDslu, 4734 SDs, 0 SdLazy, 11754 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14038 GetRequests, 7135 SyntacticMatches, 0 SemanticMatches, 6903 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 198.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=117, 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, 117 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 203.1s InterpolantComputationTime, 14271 NumberOfCodeBlocks, 14271 NumberOfCodeBlocksAsserted, 1963 NumberOfCheckSat, 14038 ConstructedInterpolants, 0 QuantifiedInterpolants, 3299860 SizeOfPredicates, 116 NumberOfNonLiveVariables, 28188 ConjunctsInSsa, 7018 ConjunctsInUnsatCore, 233 InterpolantComputations, 1 PerfectInterpolantSequences, 0/533832 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-41-36-545.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-41-36-545.csv Completed graceful shutdown