java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:19:06,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:19:06,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:19:06,742 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:19:06,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:19:06,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:19:06,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:19:06,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:19:06,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:19:06,749 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:19:06,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-02 12:19:06,750 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-02 12:19:06,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-02 12:19:06,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-02 12:19:06,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-02 12:19:06,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-02 12:19:06,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-02 12:19:06,757 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-02 12:19:06,759 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-02 12:19:06,760 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-02 12:19:06,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-02 12:19:06,763 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-02 12:19:06,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-02 12:19:06,774 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 [2018-10-02 12:19:06,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:19:06,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:19:06,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:19:06,790 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:19:06,791 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:19:06,791 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:19:06,791 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:19:06,791 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:19:06,792 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:19:06,792 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:19:06,792 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:19:06,792 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:19:06,792 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:19:06,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:19:06,793 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:19:06,793 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:19:06,793 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:19:06,793 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:19:06,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:19:06,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:19:06,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:19:06,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:19:06,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:19:06,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:19:06,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:19:06,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:19:06,795 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:19:06,795 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:19:06,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:19:06,796 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:19:06,796 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:19:06,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:19:06,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:19:06,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:19:06,859 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:19:06,860 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:19:06,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl [2018-10-02 12:19:06,863 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl' [2018-10-02 12:19:06,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:19:06,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:19:06,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:19:06,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:19:06,909 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:19:06,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,946 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:19:06,946 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:19:06,947 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:19:06,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:19:06,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:19:06,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:19:06,950 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:19:06,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/1) ... [2018-10-02 12:19:06,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:19:06,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:19:06,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:19:06,973 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:19:06,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (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 [2018-10-02 12:19:07,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-02 12:19:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-02 12:19:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-02 12:19:07,330 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:19:07,331 INFO L202 PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:19:07 BoogieIcfgContainer [2018-10-02 12:19:07,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:19:07,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:19:07,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:19:07,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:19:07,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:19:06" (1/2) ... [2018-10-02 12:19:07,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa18f89 and model type Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:19:07, skipping insertion in model container [2018-10-02 12:19:07,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:19:07" (2/2) ... [2018-10-02 12:19:07,345 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-sophisticated.bpl [2018-10-02 12:19:07,356 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:19:07,365 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:19:07,420 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:19:07,421 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:19:07,422 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:19:07,422 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:19:07,422 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:19:07,422 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:19:07,422 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:19:07,423 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:19:07,423 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:19:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-02 12:19:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 12:19:07,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:07,447 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 12:19:07,448 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:07,454 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash 30240, now seen corresponding path program 1 times [2018-10-02 12:19:07,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:07,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:07,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:07,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:07,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:07,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:19:07,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:19:07,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:19:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:19:07,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:07,683 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-02 12:19:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:08,029 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-10-02 12:19:08,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:19:08,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-02 12:19:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:08,045 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:19:08,045 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:19:08,048 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 [2018-10-02 12:19:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:19:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-10-02 12:19:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 12:19:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-10-02 12:19:08,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3 [2018-10-02 12:19:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:08,087 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-10-02 12:19:08,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:19:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2018-10-02 12:19:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:19:08,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:08,088 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-02 12:19:08,089 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:08,089 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash 28755491, now seen corresponding path program 1 times [2018-10-02 12:19:08,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:08,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:08,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:08,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:08,181 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 [2018-10-02 12:19:08,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:08,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:19:08,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:19:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:19:08,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:08,305 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 4 states. [2018-10-02 12:19:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:08,400 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-10-02 12:19:08,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:19:08,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-10-02 12:19:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:08,402 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:19:08,402 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:19:08,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:19:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-10-02 12:19:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:19:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-10-02 12:19:08,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2018-10-02 12:19:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:08,407 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-02 12:19:08,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:19:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-10-02 12:19:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:19:08,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:08,408 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-02 12:19:08,408 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:08,408 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:08,408 INFO L82 PathProgramCache]: Analyzing trace with hash 28757413, now seen corresponding path program 1 times [2018-10-02 12:19:08,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:08,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:08,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:08,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:08,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:08,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:08,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:19:08,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:19:08,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:19:08,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:08,524 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2018-10-02 12:19:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:08,818 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2018-10-02 12:19:08,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:19:08,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-10-02 12:19:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:08,820 INFO L225 Difference]: With dead ends: 12 [2018-10-02 12:19:08,820 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:19:08,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:19:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-10-02 12:19:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:19:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-10-02 12:19:08,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2018-10-02 12:19:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:08,824 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-02 12:19:08,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:19:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-10-02 12:19:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:19:08,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:08,826 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2018-10-02 12:19:08,826 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:08,826 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1863917926, now seen corresponding path program 2 times [2018-10-02 12:19:08,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:08,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:08,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:08,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:08,948 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 [2018-10-02 12:19:08,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:08,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:08,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:08,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:09,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:19:09,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:19:09,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:19:09,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:09,062 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 5 states. [2018-10-02 12:19:09,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:09,181 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-10-02 12:19:09,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:19:09,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-10-02 12:19:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:09,183 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:19:09,184 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:19:09,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:19:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-10-02 12:19:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:19:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-10-02 12:19:09,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7 [2018-10-02 12:19:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:09,188 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-10-02 12:19:09,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:19:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2018-10-02 12:19:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:19:09,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:09,190 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-10-02 12:19:09,190 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:09,190 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1863919848, now seen corresponding path program 1 times [2018-10-02 12:19:09,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:09,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:09,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:09,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:09,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:09,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:09,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:19:09,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:19:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:19:09,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:09,432 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states. [2018-10-02 12:19:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:09,506 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-10-02 12:19:09,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:19:09,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-10-02 12:19:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:09,507 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:19:09,508 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:19:09,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:19:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-10-02 12:19:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:19:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-10-02 12:19:09,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7 [2018-10-02 12:19:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:09,514 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-10-02 12:19:09,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:19:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2018-10-02 12:19:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:19:09,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:09,515 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-10-02 12:19:09,515 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:09,515 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1865764968, now seen corresponding path program 2 times [2018-10-02 12:19:09,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:09,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:09,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:09,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:09,575 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:09,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:09,589 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:09,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:09,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:09,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:19:09,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:19:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:19:09,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:09,634 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states. [2018-10-02 12:19:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:10,092 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-10-02 12:19:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:19:10,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-10-02 12:19:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:10,093 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:19:10,093 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:19:10,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:19:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-10-02 12:19:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:19:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-10-02 12:19:10,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 7 [2018-10-02 12:19:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:10,097 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-10-02 12:19:10,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:19:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2018-10-02 12:19:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:19:10,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:10,098 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2018-10-02 12:19:10,099 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:10,099 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:10,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1865766890, now seen corresponding path program 2 times [2018-10-02 12:19:10,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:10,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:10,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:10,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:10,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:10,189 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:10,201 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:10,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:10,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:10,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:19:10,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:19:10,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:19:10,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:10,267 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 5 states. [2018-10-02 12:19:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:10,355 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2018-10-02 12:19:10,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:19:10,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-10-02 12:19:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:10,356 INFO L225 Difference]: With dead ends: 16 [2018-10-02 12:19:10,356 INFO L226 Difference]: Without dead ends: 14 [2018-10-02 12:19:10,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-02 12:19:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2018-10-02 12:19:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:19:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-10-02 12:19:10,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7 [2018-10-02 12:19:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:10,360 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-10-02 12:19:10,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:19:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2018-10-02 12:19:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:10,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:10,361 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1] [2018-10-02 12:19:10,361 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:10,362 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash 223459305, now seen corresponding path program 3 times [2018-10-02 12:19:10,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:10,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:10,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:10,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:10,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:10,446 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:10,451 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:19:10,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:10,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:10,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:10,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:10,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:10,543 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 6 states. [2018-10-02 12:19:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:10,622 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-10-02 12:19:10,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:10,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:10,624 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:19:10,624 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:19:10,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:19:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-10-02 12:19:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:10,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2018-10-02 12:19:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:10,631 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:10,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:10,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:10,632 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:10,632 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:10,633 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 223461227, now seen corresponding path program 3 times [2018-10-02 12:19:10,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:10,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:10,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:10,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:10,725 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:10,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:10,743 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:19:10,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:10,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:10,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:10,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:10,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:10,811 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states. [2018-10-02 12:19:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:10,944 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2018-10-02 12:19:10,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:10,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:10,945 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:19:10,945 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:19:10,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:19:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-10-02 12:19:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:19:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-10-02 12:19:10,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2018-10-02 12:19:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:10,950 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-10-02 12:19:10,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2018-10-02 12:19:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:10,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:10,951 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:10,951 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:10,951 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:10,951 INFO L82 PathProgramCache]: Analyzing trace with hash 225306347, now seen corresponding path program 4 times [2018-10-02 12:19:10,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:10,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:10,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:10,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:11,043 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:11,048 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:11,049 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:11,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:11,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:11,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:11,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:11,144 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 6 states. [2018-10-02 12:19:11,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:11,231 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-10-02 12:19:11,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:11,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:11,233 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:19:11,233 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:19:11,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:19:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-10-02 12:19:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:11,240 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2018-10-02 12:19:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:11,240 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:11,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:11,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:11,241 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:11,241 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:11,241 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 225308269, now seen corresponding path program 5 times [2018-10-02 12:19:11,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:11,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:11,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:11,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,330 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 [2018-10-02 12:19:11,337 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:11,343 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 12:19:11,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:11,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:11,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:11,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:11,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:11,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:11,398 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states. [2018-10-02 12:19:11,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:11,468 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2018-10-02 12:19:11,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:11,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:11,469 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:19:11,469 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:19:11,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:19:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-10-02 12:19:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:19:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-10-02 12:19:11,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2018-10-02 12:19:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:11,475 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-10-02 12:19:11,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2018-10-02 12:19:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:11,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:11,476 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:11,477 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:11,477 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1998466667, now seen corresponding path program 6 times [2018-10-02 12:19:11,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:11,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,531 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 [2018-10-02 12:19:11,540 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:11,547 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 12:19:11,548 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:11,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:11,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:11,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:11,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:11,602 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 6 states. [2018-10-02 12:19:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:11,824 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2018-10-02 12:19:11,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:11,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:11,825 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:19:11,825 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:19:11,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:19:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-10-02 12:19:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:11,831 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 9 [2018-10-02 12:19:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:11,832 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:11,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:11,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:11,833 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:11,833 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:11,833 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1998468589, now seen corresponding path program 7 times [2018-10-02 12:19:11,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:11,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:11,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:11,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:11,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:11,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:11,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:11,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:11,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:11,939 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 6 states. [2018-10-02 12:19:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:12,031 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2018-10-02 12:19:12,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:12,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:12,033 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:19:12,033 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:19:12,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:12,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:19:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2018-10-02 12:19:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:12,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2018-10-02 12:19:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:12,040 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:12,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:12,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:12,041 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2018-10-02 12:19:12,041 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:12,041 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2000313709, now seen corresponding path program 8 times [2018-10-02 12:19:12,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:12,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:12,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:12,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:12,105 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 [2018-10-02 12:19:12,113 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:12,120 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:12,120 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:12,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:12,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:12,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,168 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states. [2018-10-02 12:19:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:12,255 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2018-10-02 12:19:12,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:12,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:12,260 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:19:12,260 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:19:12,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:19:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2018-10-02 12:19:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:12,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 9 [2018-10-02 12:19:12,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:12,266 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:12,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:19:12,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:12,267 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1] [2018-10-02 12:19:12,267 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:12,267 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2000315631, now seen corresponding path program 3 times [2018-10-02 12:19:12,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:12,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:12,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:12,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:12,333 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 [2018-10-02 12:19:12,342 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:12,348 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:19:12,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:12,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:19:12,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:19:12,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:19:12,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,393 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 6 states. [2018-10-02 12:19:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:12,461 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2018-10-02 12:19:12,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:19:12,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-10-02 12:19:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:12,463 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:19:12,463 INFO L226 Difference]: Without dead ends: 18 [2018-10-02 12:19:12,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-02 12:19:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2018-10-02 12:19:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:19:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-10-02 12:19:12,469 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2018-10-02 12:19:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:12,470 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-10-02 12:19:12,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:19:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2018-10-02 12:19:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:12,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:12,470 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2018-10-02 12:19:12,471 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:12,471 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -4277844, now seen corresponding path program 4 times [2018-10-02 12:19:12,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:12,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:12,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:12,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:12,568 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 [2018-10-02 12:19:12,576 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:12,582 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:12,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:12,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:12,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:12,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:12,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,681 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 7 states. [2018-10-02 12:19:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:12,755 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2018-10-02 12:19:12,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:12,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:12,757 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:19:12,757 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:19:12,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:19:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2018-10-02 12:19:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:12,766 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:12,766 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:12,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:12,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:12,767 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:12,767 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:12,767 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -4275922, now seen corresponding path program 9 times [2018-10-02 12:19:12,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:12,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:12,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:12,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:12,857 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 [2018-10-02 12:19:12,865 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:12,873 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-02 12:19:12,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:12,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:12,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:12,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,934 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:13,028 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2018-10-02 12:19:13,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:13,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:13,030 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:19:13,030 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:19:13,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:19:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2018-10-02 12:19:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:13,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11 [2018-10-02 12:19:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:13,038 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:13,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:13,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:13,039 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:13,040 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:13,040 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2430802, now seen corresponding path program 10 times [2018-10-02 12:19:13,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:13,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:13,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:13,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:13,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:13,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:13,158 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:13,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:13,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:13,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:13,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:13,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:13,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:13,217 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states. [2018-10-02 12:19:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:13,327 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2018-10-02 12:19:13,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:13,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:13,330 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:19:13,331 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:19:13,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:19:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-10-02 12:19:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:13,338 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:13,339 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:13,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:13,339 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:13,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:13,340 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:13,340 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:13,340 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:13,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2428880, now seen corresponding path program 11 times [2018-10-02 12:19:13,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:13,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:13,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:13,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:13,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:13,454 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:13,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-10-02 12:19:13,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:13,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:13,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:13,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:13,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:13,507 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:13,780 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2018-10-02 12:19:13,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:13,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:13,781 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:19:13,781 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:19:13,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:19:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2018-10-02 12:19:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:13,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11 [2018-10-02 12:19:13,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:13,788 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:13,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:13,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:13,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:13,788 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:13,789 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:13,789 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1770729518, now seen corresponding path program 12 times [2018-10-02 12:19:13,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:13,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:13,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:13,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:13,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:13,857 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:13,879 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-02 12:19:13,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:13,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:13,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:13,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:13,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:13,938 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 7 states. [2018-10-02 12:19:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:14,180 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2018-10-02 12:19:14,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:14,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:14,182 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:19:14,183 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:19:14,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:19:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2018-10-02 12:19:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:14,191 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:14,191 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:14,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:14,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:14,192 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:14,192 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:14,193 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1770731440, now seen corresponding path program 13 times [2018-10-02 12:19:14,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:14,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:14,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:14,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:14,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:14,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:14,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:14,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:14,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:14,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:14,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:14,344 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:14,489 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2018-10-02 12:19:14,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:14,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:14,490 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:19:14,490 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:19:14,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:19:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2018-10-02 12:19:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:14,498 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11 [2018-10-02 12:19:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:14,498 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:14,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:14,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:14,499 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:14,499 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:14,499 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1772576560, now seen corresponding path program 14 times [2018-10-02 12:19:14,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:14,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:14,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:14,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:14,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:14,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:14,609 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:14,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:14,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:14,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:14,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:14,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:14,651 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states. [2018-10-02 12:19:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:14,892 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2018-10-02 12:19:14,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:14,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:14,896 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:19:14,896 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:19:14,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:19:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-10-02 12:19:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:14,904 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:14,904 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:14,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:14,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:14,904 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:14,905 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:14,905 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1772578482, now seen corresponding path program 15 times [2018-10-02 12:19:14,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:14,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:14,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:14,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:15,008 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 [2018-10-02 12:19:15,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:15,025 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-02 12:19:15,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:15,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:15,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:15,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:15,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:15,067 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:15,219 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2018-10-02 12:19:15,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:15,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:15,220 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:19:15,220 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:19:15,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:19:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2018-10-02 12:19:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:15,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11 [2018-10-02 12:19:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:15,228 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:15,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:15,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:15,228 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:15,229 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:15,229 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:15,229 INFO L82 PathProgramCache]: Analyzing trace with hash 675780526, now seen corresponding path program 16 times [2018-10-02 12:19:15,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:15,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:15,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:15,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:15,299 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:15,310 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:15,315 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:15,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:15,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:15,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:15,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:15,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:15,360 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 7 states. [2018-10-02 12:19:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:15,603 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:15,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:15,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:15,604 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:15,604 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:15,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-02 12:19:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:15,613 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11 [2018-10-02 12:19:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:15,614 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:15,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:15,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:15,615 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:15,615 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:15,615 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:15,615 INFO L82 PathProgramCache]: Analyzing trace with hash 675782448, now seen corresponding path program 17 times [2018-10-02 12:19:15,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:15,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:15,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:15,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:16,012 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 [2018-10-02 12:19:16,019 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:16,031 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-10-02 12:19:16,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:16,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:16,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:16,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,105 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states. [2018-10-02 12:19:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:16,196 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:16,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:16,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:16,197 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:16,197 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:16,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:19:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2018-10-02 12:19:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:16,207 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:16,207 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:16,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:16,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:16,208 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:16,208 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:16,208 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash 677627568, now seen corresponding path program 18 times [2018-10-02 12:19:16,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:16,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:16,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:16,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:16,260 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 [2018-10-02 12:19:16,267 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:16,279 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-02 12:19:16,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:16,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:16,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:16,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:16,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,414 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:16,543 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:16,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:16,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:16,544 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:16,544 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:16,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-02 12:19:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:16,554 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11 [2018-10-02 12:19:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:16,554 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:16,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:16,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:16,555 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:16,555 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:16,555 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:16,556 INFO L82 PathProgramCache]: Analyzing trace with hash 677629490, now seen corresponding path program 19 times [2018-10-02 12:19:16,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:16,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:16,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:16,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:16,606 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:16,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:16,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:16,673 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,673 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states. [2018-10-02 12:19:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:16,741 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:16,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:16,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:16,742 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:16,742 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:16,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2018-10-02 12:19:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:16,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11 [2018-10-02 12:19:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:16,751 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:16,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:16,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:16,752 INFO L375 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1] [2018-10-02 12:19:16,752 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:16,752 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1844179408, now seen corresponding path program 20 times [2018-10-02 12:19:16,753 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:16,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:16,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:16,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:16,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:16,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:16,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:16,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:16,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:16,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:16,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:16,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,879 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states. [2018-10-02 12:19:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:16,948 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2018-10-02 12:19:16,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:16,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:16,949 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:19:16,949 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:19:16,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:19:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2018-10-02 12:19:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:16,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11 [2018-10-02 12:19:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:16,963 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:16,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:16,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:16,964 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:16,964 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:16,964 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1844177486, now seen corresponding path program 21 times [2018-10-02 12:19:16,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:16,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:16,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:16,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:17,051 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 [2018-10-02 12:19:17,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:17,074 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-02 12:19:17,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:17,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:17,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:17,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:17,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:17,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:17,124 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states. [2018-10-02 12:19:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:17,238 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2018-10-02 12:19:17,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:17,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:17,239 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:19:17,239 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:19:17,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:17,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:19:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2018-10-02 12:19:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:17,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11 [2018-10-02 12:19:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:17,249 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:17,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:17,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:17,250 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1] [2018-10-02 12:19:17,250 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:17,250 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1842332366, now seen corresponding path program 22 times [2018-10-02 12:19:17,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:17,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:17,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:17,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:17,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:17,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:17,310 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:17,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:17,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:17,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:17,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:17,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:17,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:17,361 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states. [2018-10-02 12:19:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:17,437 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2018-10-02 12:19:17,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:17,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:17,439 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:19:17,439 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:19:17,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:19:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-10-02 12:19:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:17,447 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11 [2018-10-02 12:19:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:17,448 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:17,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:19:17,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:17,448 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2018-10-02 12:19:17,449 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:17,449 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1842330444, now seen corresponding path program 4 times [2018-10-02 12:19:17,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:17,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:17,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:17,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:17,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:17,517 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:17,548 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:17,548 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:17,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:17,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:19:17,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:19:17,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:19:17,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:17,609 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states. [2018-10-02 12:19:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:17,706 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2018-10-02 12:19:17,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:19:17,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-02 12:19:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:17,707 INFO L225 Difference]: With dead ends: 24 [2018-10-02 12:19:17,707 INFO L226 Difference]: Without dead ends: 22 [2018-10-02 12:19:17,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-02 12:19:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2018-10-02 12:19:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:19:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-02 12:19:17,714 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11 [2018-10-02 12:19:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:17,715 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-02 12:19:17,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:19:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-10-02 12:19:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:17,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:17,715 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2018-10-02 12:19:17,716 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:17,716 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:17,716 INFO L82 PathProgramCache]: Analyzing trace with hash 183654063, now seen corresponding path program 5 times [2018-10-02 12:19:17,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:17,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:17,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:17,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:17,884 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:17,891 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:17,963 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:17,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:17,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:18,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:18,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:18,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:18,153 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:18,154 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 8 states. [2018-10-02 12:19:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:18,250 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:18,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:18,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:18,251 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:18,251 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:18,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:19:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-10-02 12:19:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:18,263 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:18,263 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:18,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:18,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:18,263 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:18,264 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:18,264 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash 183655985, now seen corresponding path program 23 times [2018-10-02 12:19:18,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:18,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:18,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:18,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:18,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:18,331 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:18,342 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:18,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:18,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:18,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:18,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:18,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:18,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:18,403 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:18,501 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:18,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:18,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:18,502 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:18,502 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:18,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-02 12:19:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:18,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:18,516 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:18,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:18,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:18,517 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:18,517 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:18,517 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash 185501105, now seen corresponding path program 24 times [2018-10-02 12:19:18,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:18,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:18,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:18,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:18,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:18,601 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:18,610 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-02 12:19:18,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:18,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:18,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:18,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:18,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:18,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:18,696 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:18,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:18,843 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:18,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:18,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:18,844 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:18,844 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:18,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-10-02 12:19:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:18,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:18,859 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:18,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:18,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:18,860 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:18,860 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:18,860 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:18,861 INFO L82 PathProgramCache]: Analyzing trace with hash 185503027, now seen corresponding path program 25 times [2018-10-02 12:19:18,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:18,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:18,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:18,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:18,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:18,933 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 [2018-10-02 12:19:18,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:18,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:19,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:19,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:19,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:19,030 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:19,232 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:19,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:19,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:19,232 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:19,232 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:19,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2018-10-02 12:19:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:19,243 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13 [2018-10-02 12:19:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:19,243 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:19,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:19,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:19,243 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:19,243 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:19,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1958661425, now seen corresponding path program 26 times [2018-10-02 12:19:19,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:19,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:19,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:19,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:19,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:19,324 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:19,329 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:19,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:19,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:19,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:19,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:19,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:19,421 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states. [2018-10-02 12:19:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:19,582 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:19,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:19,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:19,583 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:19,583 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:19,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:19,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-10-02 12:19:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:19,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:19,600 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:19,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:19,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:19,601 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:19,601 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:19,601 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1958663347, now seen corresponding path program 27 times [2018-10-02 12:19:19,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:19,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:19,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:19,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:19,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:19,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:19,679 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:19:19,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:19,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:19,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:19,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:19,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:19,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:19,740 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:19,828 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:19,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:19,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:19,829 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:19,829 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:19,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2018-10-02 12:19:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:19,841 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:19,841 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:19,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:19,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:19,842 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:19,842 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:19,842 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1960508467, now seen corresponding path program 28 times [2018-10-02 12:19:19,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:19,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:19,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:19,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:19,893 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 [2018-10-02 12:19:19,902 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:19,914 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:19,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:19,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:19,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:19,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:19,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:19,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:19,965 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:20,071 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2018-10-02 12:19:20,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:20,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:20,072 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:19:20,072 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:19:20,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:19:20,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-10-02 12:19:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:20,086 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:20,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:20,086 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:20,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:20,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:20,087 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:20,087 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:20,087 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:20,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1960510389, now seen corresponding path program 29 times [2018-10-02 12:19:20,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:20,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:20,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:20,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:20,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:20,630 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:20,637 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:20,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:20,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:20,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:20,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:20,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:20,687 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:20,765 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2018-10-02 12:19:20,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:20,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:20,766 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:19:20,766 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:19:20,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:19:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:19:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2018-10-02 12:19:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:20,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13 [2018-10-02 12:19:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:20,780 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:20,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:20,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:20,780 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:20,781 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:20,781 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash 863712433, now seen corresponding path program 30 times [2018-10-02 12:19:20,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:20,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:20,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:20,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:20,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:20,843 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:20,850 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-02 12:19:20,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:20,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:20,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:20,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:20,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:20,900 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 8 states. [2018-10-02 12:19:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:21,000 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:21,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:21,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:21,001 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:21,001 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:21,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-10-02 12:19:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:21,015 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:21,015 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:21,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:21,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:21,016 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:21,016 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:21,016 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:21,016 INFO L82 PathProgramCache]: Analyzing trace with hash 863714355, now seen corresponding path program 31 times [2018-10-02 12:19:21,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:21,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:21,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:21,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:21,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:21,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:21,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:21,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:21,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:21,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:21,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:21,126 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:21,402 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:21,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:21,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:21,404 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:21,404 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:21,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-02 12:19:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:21,419 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:21,419 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:21,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:21,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:21,420 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:21,420 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:21,420 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash 865559475, now seen corresponding path program 32 times [2018-10-02 12:19:21,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:21,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:21,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:21,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:21,482 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:21,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:21,495 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:21,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:21,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:21,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:21,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:21,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:21,548 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:21,662 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:21,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:21,663 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:21,663 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:21,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-10-02 12:19:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:21,678 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:21,679 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:21,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:21,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:21,679 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:21,679 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:21,679 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 865561397, now seen corresponding path program 33 times [2018-10-02 12:19:21,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:21,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:21,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:21,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:21,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:21,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:21,747 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:19:21,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:21,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:21,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:21,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:21,798 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:21,894 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:21,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:21,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:21,895 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:21,895 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:21,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2018-10-02 12:19:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:21,908 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13 [2018-10-02 12:19:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:21,908 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:21,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:21,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:21,909 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:21,909 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:21,909 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1656247501, now seen corresponding path program 34 times [2018-10-02 12:19:21,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:21,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:21,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:21,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:22,006 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 [2018-10-02 12:19:22,014 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:22,018 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:22,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:22,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:22,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:22,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:22,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:22,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:22,060 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states. [2018-10-02 12:19:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:22,145 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:22,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:22,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:22,146 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:22,146 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:22,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-10-02 12:19:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:22,163 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:22,163 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:22,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:22,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:22,164 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:22,164 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:22,164 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1656245579, now seen corresponding path program 35 times [2018-10-02 12:19:22,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:22,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:22,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:22,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:22,302 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 [2018-10-02 12:19:22,311 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:22,316 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:22,317 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:22,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:22,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:22,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:22,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:22,356 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:22,452 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:22,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:22,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:22,453 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:22,453 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:22,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2018-10-02 12:19:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:22,468 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:22,469 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:22,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:22,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:22,469 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:22,469 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:22,470 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:22,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1654400459, now seen corresponding path program 36 times [2018-10-02 12:19:22,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:22,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:22,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:22,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:22,512 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 [2018-10-02 12:19:22,521 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:22,527 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-02 12:19:22,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:22,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:22,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:22,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:22,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:22,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:22,593 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:22,689 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2018-10-02 12:19:22,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:22,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:22,690 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:19:22,690 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:19:22,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:19:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-10-02 12:19:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:22,706 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:22,706 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:22,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:22,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:22,707 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:22,707 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:22,707 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1654398537, now seen corresponding path program 37 times [2018-10-02 12:19:22,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:22,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:22,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:22,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:22,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:22,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:22,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:22,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:22,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:22,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:22,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:22,843 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:22,954 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2018-10-02 12:19:22,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:22,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:22,955 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:19:22,955 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:19:22,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:19:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2018-10-02 12:19:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:22,967 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13 [2018-10-02 12:19:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:22,967 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:22,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:22,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:22,967 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:22,967 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:22,968 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash 884718641, now seen corresponding path program 38 times [2018-10-02 12:19:22,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:22,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:22,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:22,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:23,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:23,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:23,021 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:23,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:23,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:23,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:23,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:23,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:23,070 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 8 states. [2018-10-02 12:19:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:23,175 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:23,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:23,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:23,177 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:23,177 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:23,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-10-02 12:19:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:23,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:23,202 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:23,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:23,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:23,202 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:23,203 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:23,203 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash 884720563, now seen corresponding path program 39 times [2018-10-02 12:19:23,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:23,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:23,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:23,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:23,257 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 [2018-10-02 12:19:23,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:23,274 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:19:23,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:23,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:23,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:23,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:23,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:23,323 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:23,451 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:23,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:23,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:23,453 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:23,453 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:23,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2018-10-02 12:19:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:23,472 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:23,473 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:23,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:23,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:23,473 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:23,473 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:23,473 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash 886565683, now seen corresponding path program 40 times [2018-10-02 12:19:23,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:23,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:23,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:23,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:23,516 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 [2018-10-02 12:19:23,525 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:23,530 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:23,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:23,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:23,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:23,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:23,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:23,586 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:23,755 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:23,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:23,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:23,756 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:23,756 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:23,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-10-02 12:19:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:23,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:23,780 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:23,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:23,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:23,780 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:23,781 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:23,781 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash 886567605, now seen corresponding path program 41 times [2018-10-02 12:19:23,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:23,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:23,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:23,902 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:23,912 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:23,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:23,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:23,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:23,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:23,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:23,958 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:24,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:24,120 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:24,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:24,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:24,121 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:24,121 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:24,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2018-10-02 12:19:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:24,141 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:24,141 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:24,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:24,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:24,142 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:24,142 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:24,142 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1635241293, now seen corresponding path program 42 times [2018-10-02 12:19:24,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:24,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:24,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:24,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:24,233 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:24,242 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-02 12:19:24,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:24,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:24,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:24,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:24,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:24,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:24,296 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:24,463 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:24,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:24,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:24,464 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:24,464 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:24,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:24,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-10-02 12:19:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:24,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:24,486 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:24,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:24,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:24,486 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:24,486 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:24,486 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:24,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1635239371, now seen corresponding path program 43 times [2018-10-02 12:19:24,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:24,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:24,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:24,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:24,572 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 [2018-10-02 12:19:24,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:24,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:24,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:24,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:24,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:24,650 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:24,777 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:24,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:24,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:24,778 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:24,779 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:24,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2018-10-02 12:19:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:24,799 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:24,799 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:24,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:24,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:24,800 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:24,800 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:24,800 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1633394251, now seen corresponding path program 44 times [2018-10-02 12:19:24,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:24,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:24,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:24,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:24,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:24,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:24,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:24,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:24,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:24,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:24,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:24,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:24,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:24,907 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:25,024 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:25,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:25,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:25,024 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:25,025 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:25,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-10-02 12:19:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:25,046 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:25,046 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:25,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:25,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:25,046 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:25,046 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:25,046 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:25,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1633392329, now seen corresponding path program 45 times [2018-10-02 12:19:25,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:25,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:25,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:25,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:25,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:25,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:19:25,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:25,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:25,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:25,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:25,151 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:25,257 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:25,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:25,257 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:25,258 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:25,258 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:25,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 18. [2018-10-02 12:19:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:25,276 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13 [2018-10-02 12:19:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:25,276 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:25,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:25,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:25,276 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:25,277 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:25,277 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1564777011, now seen corresponding path program 46 times [2018-10-02 12:19:25,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:25,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:25,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:25,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:25,379 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:25,406 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:25,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:25,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:25,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:25,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:25,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:25,454 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states. [2018-10-02 12:19:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:25,554 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:25,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:25,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:25,555 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:25,555 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:25,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2018-10-02 12:19:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:25,580 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:25,581 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:25,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:25,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:25,581 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:25,581 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:25,581 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1564778933, now seen corresponding path program 47 times [2018-10-02 12:19:25,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:25,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:25,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:25,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:25,642 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:25,647 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:25,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:25,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:25,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:25,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:25,723 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:25,827 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:25,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:25,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:25,828 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:25,828 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:25,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-10-02 12:19:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:25,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:25,849 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:25,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:25,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:25,850 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:25,850 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:25,850 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1566624053, now seen corresponding path program 48 times [2018-10-02 12:19:25,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:25,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:25,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:25,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:25,903 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:25,909 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-02 12:19:25,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:25,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:25,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:25,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:25,978 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:26,100 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:26,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:26,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:26,101 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:26,101 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:26,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2018-10-02 12:19:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:26,125 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:26,125 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:26,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:26,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:26,126 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:26,126 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:26,126 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1566625975, now seen corresponding path program 49 times [2018-10-02 12:19:26,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:26,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:26,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:26,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:26,204 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 [2018-10-02 12:19:26,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:26,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:26,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:26,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:26,260 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:26,472 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:26,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:26,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:26,473 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:26,473 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:26,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2018-10-02 12:19:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:26,493 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13 [2018-10-02 12:19:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:26,493 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:26,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:26,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:26,493 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1] [2018-10-02 12:19:26,494 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:26,494 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:26,494 INFO L82 PathProgramCache]: Analyzing trace with hash -955182923, now seen corresponding path program 50 times [2018-10-02 12:19:26,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:26,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:26,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:26,531 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 [2018-10-02 12:19:26,538 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:26,543 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:26,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:26,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:26,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:26,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:26,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:26,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:26,589 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states. [2018-10-02 12:19:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:26,693 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:26,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:26,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:26,694 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:26,694 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:26,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-10-02 12:19:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:26,719 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:26,719 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:26,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:26,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:26,719 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:26,719 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:26,720 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash -955181001, now seen corresponding path program 51 times [2018-10-02 12:19:26,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:26,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:26,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:26,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:26,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:26,772 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:26,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:19:26,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:26,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:26,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:26,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:26,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:26,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:26,834 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:26,939 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:26,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:26,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:26,940 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:26,940 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:26,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-10-02 12:19:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:26,963 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13 [2018-10-02 12:19:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:26,964 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:26,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:26,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:26,964 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2018-10-02 12:19:26,964 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:26,964 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:26,964 INFO L82 PathProgramCache]: Analyzing trace with hash -953335881, now seen corresponding path program 52 times [2018-10-02 12:19:26,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:26,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:26,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:26,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:27,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:27,021 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:27,026 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:27,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:27,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:27,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:27,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:27,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:27,078 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:27,078 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states. [2018-10-02 12:19:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:27,176 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2018-10-02 12:19:27,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:27,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:27,177 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:19:27,177 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:19:27,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:19:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-10-02 12:19:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:27,202 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13 [2018-10-02 12:19:27,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:27,202 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:27,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:19:27,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:27,203 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2018-10-02 12:19:27,203 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:27,203 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash -953333959, now seen corresponding path program 5 times [2018-10-02 12:19:27,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:27,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:27,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:27,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:27,267 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 [2018-10-02 12:19:27,276 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:27,281 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:19:27,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:27,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:27,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:19:27,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:19:27,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:19:27,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:27,336 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states. [2018-10-02 12:19:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:27,432 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2018-10-02 12:19:27,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:19:27,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:19:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:27,433 INFO L225 Difference]: With dead ends: 28 [2018-10-02 12:19:27,433 INFO L226 Difference]: Without dead ends: 26 [2018-10-02 12:19:27,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-02 12:19:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2018-10-02 12:19:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:19:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-10-02 12:19:27,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13 [2018-10-02 12:19:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:27,452 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-10-02 12:19:27,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:19:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2018-10-02 12:19:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:27,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:27,452 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1] [2018-10-02 12:19:27,452 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:27,452 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash 397590258, now seen corresponding path program 6 times [2018-10-02 12:19:27,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:27,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:27,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:27,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:27,511 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 [2018-10-02 12:19:27,521 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:27,527 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:27,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:27,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:27,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:27,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:27,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:27,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:27,593 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 9 states. [2018-10-02 12:19:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:27,739 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:27,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:27,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:27,740 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:27,740 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:27,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:19:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:27,777 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:27,777 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:27,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:27,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:27,778 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:27,778 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:27,778 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:27,778 INFO L82 PathProgramCache]: Analyzing trace with hash 397592180, now seen corresponding path program 53 times [2018-10-02 12:19:27,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:27,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:27,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:27,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:27,844 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 [2018-10-02 12:19:27,852 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:27,859 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:27,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:27,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:27,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:27,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:27,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:27,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:27,909 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:28,082 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:28,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:28,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:28,083 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:28,083 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:28,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:19:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:28,119 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:28,119 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:28,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:28,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:28,120 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:28,120 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:28,120 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash 399437300, now seen corresponding path program 54 times [2018-10-02 12:19:28,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:28,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:28,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:28,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:28,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:28,301 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:28,310 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:28,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:28,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:28,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:28,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:28,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:28,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:28,359 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:28,521 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:28,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:28,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:28,522 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:28,522 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:28,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:28,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:19:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:28,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:28,568 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:28,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:28,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:28,568 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:28,568 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:28,568 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash 399439222, now seen corresponding path program 55 times [2018-10-02 12:19:28,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:28,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:28,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:28,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:28,628 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 [2018-10-02 12:19:28,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:28,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:28,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:28,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:28,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:28,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:28,692 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:28,830 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:28,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:28,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:28,831 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:28,831 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:28,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2018-10-02 12:19:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:28,860 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:28,860 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:28,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:28,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:28,861 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:28,861 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:28,861 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2122369676, now seen corresponding path program 56 times [2018-10-02 12:19:28,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:28,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:28,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:28,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:28,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:28,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:28,942 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:28,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:28,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:29,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:29,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:29,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:29,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:29,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:29,006 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:29,180 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:29,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:29,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:29,180 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:29,181 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:29,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:19:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:29,212 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:29,212 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:29,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:29,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:29,212 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:29,212 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:29,212 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2122367754, now seen corresponding path program 57 times [2018-10-02 12:19:29,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:29,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:29,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:29,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:29,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:29,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:29,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:29,711 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:29,718 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:29,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:29,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:29,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:29,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:29,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:29,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:29,771 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:29,921 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:29,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:29,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:29,922 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:29,922 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:29,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:19:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:19:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:29,952 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:29,953 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:29,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:29,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:29,953 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:29,953 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:29,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2120522634, now seen corresponding path program 58 times [2018-10-02 12:19:29,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:29,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:29,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:30,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:30,025 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:30,030 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:30,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:30,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:30,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:30,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:30,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:30,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:30,087 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:30,247 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:30,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:30,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:30,248 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:30,248 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:30,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:19:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:30,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:30,282 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:30,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:30,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:30,282 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:30,282 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:30,282 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2120520712, now seen corresponding path program 59 times [2018-10-02 12:19:30,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:30,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:30,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:30,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:30,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:30,341 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:30,351 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:30,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:30,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:30,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:30,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:30,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:30,444 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:30,581 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:30,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:30,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:30,582 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:30,583 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:30,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2018-10-02 12:19:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:30,608 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15 [2018-10-02 12:19:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:30,608 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:30,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:30,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:30,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:30,609 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:30,609 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:30,609 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1077648628, now seen corresponding path program 60 times [2018-10-02 12:19:30,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:30,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:30,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:30,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:30,666 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 [2018-10-02 12:19:30,674 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:30,681 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:30,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:30,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:30,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:30,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:30,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:30,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:30,746 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states. [2018-10-02 12:19:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:30,894 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:30,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:30,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:30,895 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:30,895 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:30,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-10-02 12:19:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:30,929 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:30,929 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:30,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:30,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:30,929 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:30,929 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:30,929 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1077650550, now seen corresponding path program 61 times [2018-10-02 12:19:30,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:30,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:30,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:30,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:31,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:31,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:31,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:31,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:31,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:31,121 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:31,258 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:31,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:31,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:31,260 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:31,260 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:31,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2018-10-02 12:19:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:31,293 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:31,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:31,293 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:31,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:31,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:31,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:31,294 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:31,294 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:31,294 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1079495670, now seen corresponding path program 62 times [2018-10-02 12:19:31,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:31,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:31,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:31,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:31,348 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 [2018-10-02 12:19:31,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:31,360 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:31,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:31,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:31,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:31,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:31,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:31,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:31,419 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:31,567 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:31,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:31,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:31,569 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:31,569 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:31,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-10-02 12:19:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:31,605 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:31,606 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:31,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:31,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:31,606 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:31,606 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:31,606 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1079497592, now seen corresponding path program 63 times [2018-10-02 12:19:31,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:31,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:31,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:31,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:31,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:31,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:31,719 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:31,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:31,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:31,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:31,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:31,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:31,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:31,759 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:31,901 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:31,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:31,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:31,902 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:31,902 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:31,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2018-10-02 12:19:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:31,934 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:31,934 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:31,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:31,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:31,935 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:31,935 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:31,935 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1442311306, now seen corresponding path program 64 times [2018-10-02 12:19:31,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:31,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:31,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:31,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:31,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:32,006 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:32,012 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:32,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:32,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:32,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:32,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:32,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:32,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:32,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:32,070 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:32,197 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:32,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:32,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:32,198 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:32,198 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:32,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-10-02 12:19:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:32,235 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:32,235 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:32,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:32,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:32,235 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:32,236 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:32,236 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1442309384, now seen corresponding path program 65 times [2018-10-02 12:19:32,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:32,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:32,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:32,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:32,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:32,309 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 [2018-10-02 12:19:32,316 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:32,323 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:32,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:32,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:32,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:32,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:32,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:32,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:32,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:32,370 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:32,508 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:32,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:32,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:32,509 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:32,510 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:32,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2018-10-02 12:19:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:32,545 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:32,546 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:32,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:32,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:32,546 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:32,546 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:32,546 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1440464264, now seen corresponding path program 66 times [2018-10-02 12:19:32,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:32,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:32,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:32,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:32,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:32,819 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 [2018-10-02 12:19:32,827 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:32,834 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:32,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:32,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:32,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:32,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:32,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:32,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:32,921 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:33,058 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:33,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:33,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:33,059 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:33,059 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:33,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:19:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-10-02 12:19:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:33,097 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:33,097 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:33,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:33,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:33,098 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:33,098 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:33,098 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1440462342, now seen corresponding path program 67 times [2018-10-02 12:19:33,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:33,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:33,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:33,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:33,204 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 [2018-10-02 12:19:33,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:33,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:33,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:33,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:33,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:33,257 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:33,392 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2018-10-02 12:19:33,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:33,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:33,393 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:19:33,393 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:19:33,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:19:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2018-10-02 12:19:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:33,427 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15 [2018-10-02 12:19:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:33,427 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:33,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:33,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:33,428 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:33,428 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:33,428 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:33,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1098654836, now seen corresponding path program 68 times [2018-10-02 12:19:33,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:33,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:33,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:33,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:33,475 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 [2018-10-02 12:19:33,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:33,488 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:33,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:33,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:33,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:33,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:33,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:33,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:33,544 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 9 states. [2018-10-02 12:19:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:33,715 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:33,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:33,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:33,716 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:33,716 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:33,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:19:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:33,759 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:33,759 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:33,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:33,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:33,759 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:33,760 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:33,760 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1098656758, now seen corresponding path program 69 times [2018-10-02 12:19:33,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:33,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:33,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:33,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:33,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:33,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:33,828 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:33,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:33,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:33,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:33,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:33,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:33,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:33,890 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:34,078 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:34,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:34,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:34,080 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:34,080 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:34,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:19:34,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:34,122 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:34,122 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:34,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:34,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:34,122 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:34,122 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:34,123 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:34,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1100501878, now seen corresponding path program 70 times [2018-10-02 12:19:34,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:34,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:34,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:34,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:34,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:34,222 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:34,227 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:34,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:34,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:34,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:34,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:34,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:34,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:34,273 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:34,520 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:34,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:34,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:34,520 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:34,520 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:34,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:19:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:34,560 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:34,560 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:34,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:34,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:34,560 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:34,560 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:34,561 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1100503800, now seen corresponding path program 71 times [2018-10-02 12:19:34,561 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:34,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:34,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:34,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:34,657 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 [2018-10-02 12:19:34,665 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:34,673 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:34,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:34,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:34,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:34,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:34,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:34,717 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:34,887 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:34,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:34,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:34,888 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:34,888 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:34,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2018-10-02 12:19:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:34,927 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:34,927 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:34,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:34,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:34,927 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:34,927 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:34,927 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1421305098, now seen corresponding path program 72 times [2018-10-02 12:19:34,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:34,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:34,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:34,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:34,991 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 [2018-10-02 12:19:35,001 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:35,007 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:35,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:35,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:35,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:35,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:35,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:35,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:35,057 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:35,238 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:35,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:35,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:35,239 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:35,239 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:35,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:19:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:35,287 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:35,287 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:35,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:35,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:35,288 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:35,288 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:35,288 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1421303176, now seen corresponding path program 73 times [2018-10-02 12:19:35,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:35,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:35,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:35,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:35,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:35,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:35,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:35,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:35,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:35,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:35,407 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:35,603 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:35,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:35,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:35,604 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:35,604 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:35,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:19:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:35,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:35,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:35,646 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:35,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:35,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:35,647 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:35,647 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:35,647 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1419458056, now seen corresponding path program 74 times [2018-10-02 12:19:35,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:35,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:35,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:35,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:35,708 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 [2018-10-02 12:19:35,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:35,727 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:35,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:35,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:35,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:35,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:35,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:35,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:35,775 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:35,959 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:35,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:35,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:35,960 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:35,960 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:35,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:19:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:36,006 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:36,006 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:36,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:36,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:36,007 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:36,007 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:36,007 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1419456134, now seen corresponding path program 75 times [2018-10-02 12:19:36,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:36,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:36,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:36,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:36,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:36,085 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:36,093 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:36,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:36,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:36,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:36,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:36,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:36,151 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:36,316 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:36,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:36,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:36,317 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:36,317 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:36,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2018-10-02 12:19:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:36,350 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15 [2018-10-02 12:19:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:36,350 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:36,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:36,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:36,351 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:36,351 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:36,351 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:36,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1778713206, now seen corresponding path program 76 times [2018-10-02 12:19:36,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:36,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:36,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:36,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:36,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:36,414 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:36,422 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:36,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:36,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:36,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:36,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:36,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:36,482 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states. [2018-10-02 12:19:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:36,653 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:36,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:36,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:36,654 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:36,654 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:36,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-10-02 12:19:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:36,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:36,702 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:36,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:36,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:36,703 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:36,703 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:36,703 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1778715128, now seen corresponding path program 77 times [2018-10-02 12:19:36,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:36,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:36,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:36,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:36,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:36,768 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:36,776 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:36,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:36,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:36,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:36,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:36,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:36,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:36,841 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:37,005 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:37,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:37,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:37,006 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:37,006 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:37,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2018-10-02 12:19:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:37,051 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:37,052 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:37,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:37,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:37,052 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:37,052 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:37,052 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1780560248, now seen corresponding path program 78 times [2018-10-02 12:19:37,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:37,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:37,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:37,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:37,116 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:37,125 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:37,133 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:37,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:37,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:37,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:37,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:37,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:37,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:37,178 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:37,363 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:37,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:37,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:37,364 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:37,364 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:37,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-10-02 12:19:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:37,430 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:37,430 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:37,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:37,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:37,431 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:37,431 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:37,431 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1780562170, now seen corresponding path program 79 times [2018-10-02 12:19:37,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:37,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:37,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:37,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:37,524 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 [2018-10-02 12:19:37,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:37,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:37,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:37,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:37,585 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:37,785 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:37,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:37,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:37,786 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:37,786 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:37,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2018-10-02 12:19:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:37,827 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:37,827 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:37,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:37,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:37,828 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:37,828 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:37,828 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:37,828 INFO L82 PathProgramCache]: Analyzing trace with hash -741246728, now seen corresponding path program 80 times [2018-10-02 12:19:37,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:37,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:37,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:37,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:37,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:37,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:37,922 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:37,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:37,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:37,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:37,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:37,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:37,981 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:37,981 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:38,136 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:38,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:38,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:38,138 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:38,138 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:38,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-10-02 12:19:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:38,183 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:38,183 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:38,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:38,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:38,184 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:38,184 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:38,184 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash -741244806, now seen corresponding path program 81 times [2018-10-02 12:19:38,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:38,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:38,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:38,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:38,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:38,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:38,256 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:38,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:38,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:38,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:38,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:38,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:38,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:38,317 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:38,478 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:38,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:38,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:38,479 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:38,480 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:38,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2018-10-02 12:19:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:38,526 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:38,526 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:38,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:38,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:38,527 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:38,527 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:38,527 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash -739399686, now seen corresponding path program 82 times [2018-10-02 12:19:38,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:38,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:38,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:38,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:38,588 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 [2018-10-02 12:19:38,596 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:38,600 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:38,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:38,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:38,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:38,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:38,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:38,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:38,648 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:38,818 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2018-10-02 12:19:38,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:38,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:38,819 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:19:38,819 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:19:38,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:19:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-10-02 12:19:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:38,863 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:38,863 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:38,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:38,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:38,863 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:38,864 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:38,864 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -739397764, now seen corresponding path program 83 times [2018-10-02 12:19:38,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:38,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:38,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:38,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:38,933 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 [2018-10-02 12:19:38,941 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:38,948 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:38,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:38,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:38,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:38,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:38,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:38,996 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:38,996 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:39,148 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2018-10-02 12:19:39,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:39,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:39,149 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:19:39,149 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:19:39,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:19:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2018-10-02 12:19:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:39,178 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15 [2018-10-02 12:19:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:39,178 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:39,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:39,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:39,179 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:39,179 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:39,179 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash -189215756, now seen corresponding path program 84 times [2018-10-02 12:19:39,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:39,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:39,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:39,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:39,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:39,227 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 [2018-10-02 12:19:39,237 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:39,244 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:39,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:39,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:39,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:39,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:39,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:39,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:39,296 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 9 states. [2018-10-02 12:19:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:39,526 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:39,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:39,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:39,526 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:39,526 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:39,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:19:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:39,580 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:39,580 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:39,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:39,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:39,580 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:39,581 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:39,581 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -189213834, now seen corresponding path program 85 times [2018-10-02 12:19:39,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:39,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:39,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:39,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:39,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:39,664 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 [2018-10-02 12:19:39,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:39,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:39,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:39,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:39,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:39,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:39,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:39,737 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:39,987 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:19:39,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:39,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:39,988 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:19:39,989 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:19:39,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:19:40,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26. [2018-10-02 12:19:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:40,042 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:40,042 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:40,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:40,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:40,043 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:40,043 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:40,043 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash -187368714, now seen corresponding path program 86 times [2018-10-02 12:19:40,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:40,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:40,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:40,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:40,121 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 [2018-10-02 12:19:40,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:40,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:40,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:40,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:40,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:40,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:40,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:40,192 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:40,416 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:40,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:40,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:40,417 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:40,418 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:40,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:19:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:40,471 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:40,471 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:40,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:40,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:40,472 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:40,472 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:40,472 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash -187366792, now seen corresponding path program 87 times [2018-10-02 12:19:40,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:40,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:40,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:40,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:40,523 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 [2018-10-02 12:19:40,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:40,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:40,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:40,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:40,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:40,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:40,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:40,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:40,597 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:40,992 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:19:40,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:40,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:40,993 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:19:40,993 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:19:40,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:19:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24. [2018-10-02 12:19:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:41,077 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:41,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:41,077 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:41,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:41,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:41,078 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:41,078 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:41,078 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:41,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1585791606, now seen corresponding path program 88 times [2018-10-02 12:19:41,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:41,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:41,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:41,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:41,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:41,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:41,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:41,780 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:41,810 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:41,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:41,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:42,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:42,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:42,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:42,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:42,285 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:43,034 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:19:43,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:43,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:43,035 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:19:43,035 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:19:43,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.4s impTime [2018-10-02 12:19:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:19:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:19:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:43,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:43,097 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:43,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:43,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:43,098 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:43,098 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:43,098 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:43,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1585793528, now seen corresponding path program 89 times [2018-10-02 12:19:43,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:43,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:43,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:43,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:43,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:43,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:43,161 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:43,169 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:43,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:43,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:43,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:43,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:43,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:43,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:43,233 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:43,233 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:43,456 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:19:43,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:43,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:43,458 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:19:43,458 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:19:43,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:19:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2018-10-02 12:19:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:43,520 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:43,520 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:43,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:43,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:43,521 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:43,521 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:43,521 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1587638648, now seen corresponding path program 90 times [2018-10-02 12:19:43,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:43,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:43,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:43,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:43,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:43,575 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:43,583 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:43,590 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:43,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:43,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:43,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:43,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:43,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:43,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:43,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:43,670 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:43,901 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:43,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:43,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:43,902 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:43,903 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:43,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-10-02 12:19:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:43,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:43,962 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:43,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:43,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:43,962 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:43,962 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:43,962 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1587640570, now seen corresponding path program 91 times [2018-10-02 12:19:43,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:43,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:43,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:43,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:44,047 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 [2018-10-02 12:19:44,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:44,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:44,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:44,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:44,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:44,109 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:44,306 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:44,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:44,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:44,307 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:44,307 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:44,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 22. [2018-10-02 12:19:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:44,353 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:44,353 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:44,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:44,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:44,353 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:44,354 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:44,354 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 490842614, now seen corresponding path program 92 times [2018-10-02 12:19:44,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:44,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:44,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:44,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:44,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:44,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:44,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:44,417 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:44,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:44,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:44,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:44,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:44,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:44,474 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:44,747 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:44,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:44,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:44,748 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:44,748 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:44,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:19:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:44,809 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:44,810 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:44,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:44,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:44,810 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:44,810 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:44,810 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 490844536, now seen corresponding path program 93 times [2018-10-02 12:19:44,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:44,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:44,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:44,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:44,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:44,869 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 [2018-10-02 12:19:44,877 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:44,884 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:44,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:44,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:44,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:44,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:44,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:44,934 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:45,345 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:19:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:45,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:45,346 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:19:45,346 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:19:45,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:19:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26. [2018-10-02 12:19:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:45,442 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:45,442 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:45,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:45,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:45,443 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:45,443 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:45,443 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:45,443 INFO L82 PathProgramCache]: Analyzing trace with hash 492689656, now seen corresponding path program 94 times [2018-10-02 12:19:45,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:45,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:45,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:45,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:45,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:45,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:45,603 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:45,608 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:45,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:45,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:45,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:45,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:45,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:45,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:45,667 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:45,905 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:45,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:45,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:45,906 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:45,906 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:45,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:19:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:45,969 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:45,969 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:45,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:45,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:45,970 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:45,970 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:45,970 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:45,970 INFO L82 PathProgramCache]: Analyzing trace with hash 492691578, now seen corresponding path program 95 times [2018-10-02 12:19:45,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:45,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:45,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:45,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:46,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:46,087 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:46,094 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:46,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:46,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:46,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:46,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:46,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:46,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:46,157 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:46,379 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:19:46,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:46,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:46,380 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:19:46,380 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:19:46,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:19:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24. [2018-10-02 12:19:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:46,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:46,435 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:46,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:46,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:46,436 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:46,436 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:46,436 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:46,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2029117320, now seen corresponding path program 96 times [2018-10-02 12:19:46,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:46,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:46,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:46,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:46,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:46,558 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 [2018-10-02 12:19:46,566 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:46,573 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:46,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:46,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:46,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:46,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:46,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:46,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:46,614 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:46,838 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:19:46,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:46,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:46,838 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:19:46,838 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:19:46,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:19:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:19:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:46,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:46,902 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:46,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:46,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:46,902 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:46,903 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:46,903 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:46,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2029115398, now seen corresponding path program 97 times [2018-10-02 12:19:46,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:46,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:46,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:46,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:46,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:47,000 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 [2018-10-02 12:19:47,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:47,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:47,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:47,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:47,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:47,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:47,068 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:47,291 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:19:47,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:47,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:47,292 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:19:47,292 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:19:47,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:19:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2018-10-02 12:19:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:47,351 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:47,351 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:47,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:47,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:47,352 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:47,352 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:47,352 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2027270278, now seen corresponding path program 98 times [2018-10-02 12:19:47,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:47,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:47,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:47,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:47,415 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 [2018-10-02 12:19:47,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:47,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:47,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:47,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:47,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:47,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:47,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:47,487 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:47,705 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:47,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:47,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:47,705 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:47,706 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:47,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-10-02 12:19:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:47,770 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:47,770 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:47,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:47,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:47,771 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:47,771 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:47,771 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2027268356, now seen corresponding path program 99 times [2018-10-02 12:19:47,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:47,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:47,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:47,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:47,825 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 [2018-10-02 12:19:47,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:47,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:47,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:47,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:47,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:47,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:47,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:47,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:47,894 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:48,102 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:48,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:48,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:48,103 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:48,103 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:48,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 20. [2018-10-02 12:19:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:19:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:19:48,147 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15 [2018-10-02 12:19:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:48,147 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:19:48,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:19:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:48,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:48,147 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:48,147 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:48,148 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:48,148 INFO L82 PathProgramCache]: Analyzing trace with hash 511848822, now seen corresponding path program 100 times [2018-10-02 12:19:48,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:48,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:48,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:48,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:48,206 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 [2018-10-02 12:19:48,213 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:48,218 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:48,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:48,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:48,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:48,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:48,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:48,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:48,273 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states. [2018-10-02 12:19:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:48,567 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:48,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:48,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:48,567 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:48,567 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:48,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-10-02 12:19:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:48,635 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:48,636 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:48,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:48,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:48,636 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:48,636 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:48,637 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:48,637 INFO L82 PathProgramCache]: Analyzing trace with hash 511850744, now seen corresponding path program 101 times [2018-10-02 12:19:48,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:48,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:48,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:48,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:48,696 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 [2018-10-02 12:19:48,707 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:48,713 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:48,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:48,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:48,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:48,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:48,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:48,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:48,770 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:49,002 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:49,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:49,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:49,003 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:49,003 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:49,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2018-10-02 12:19:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:49,065 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:49,065 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:49,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:49,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:49,065 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:49,066 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:49,066 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash 513695864, now seen corresponding path program 102 times [2018-10-02 12:19:49,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:49,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:49,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:49,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:49,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:49,130 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:49,137 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:49,137 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:49,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:49,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:49,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:49,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:49,202 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:49,415 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:49,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:49,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:49,416 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:49,416 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:49,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-10-02 12:19:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:49,489 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:49,489 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:49,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:49,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:49,490 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:49,490 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:49,490 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:49,490 INFO L82 PathProgramCache]: Analyzing trace with hash 513697786, now seen corresponding path program 103 times [2018-10-02 12:19:49,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:49,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:49,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:49,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:49,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:49,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:49,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:49,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:49,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:49,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:49,625 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:49,899 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:49,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:49,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:49,899 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:49,899 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:49,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-10-02 12:19:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:49,960 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:49,961 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:49,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:49,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:49,961 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:49,961 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:49,961 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2008111112, now seen corresponding path program 104 times [2018-10-02 12:19:49,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:49,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:49,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:49,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:50,027 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 [2018-10-02 12:19:50,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:50,044 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:50,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:50,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:50,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:50,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:50,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:50,106 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:50,332 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:50,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:50,333 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:50,333 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:50,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-10-02 12:19:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:50,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:50,403 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:50,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:50,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:50,404 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:50,404 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:50,404 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2008109190, now seen corresponding path program 105 times [2018-10-02 12:19:50,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:50,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:50,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:50,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:50,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:50,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:50,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:50,487 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:50,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:50,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:50,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:50,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:50,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:50,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:50,754 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:51,986 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:19:51,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:51,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:51,986 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:19:51,986 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:19:51,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:19:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:19:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2018-10-02 12:19:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:52,051 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:52,051 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:52,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:52,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:52,052 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:52,052 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:52,052 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:52,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2006264070, now seen corresponding path program 106 times [2018-10-02 12:19:52,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:52,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:52,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:52,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:52,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:52,161 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:52,166 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:52,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:52,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:52,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:52,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:52,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:52,208 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:52,434 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:19:52,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:52,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:52,435 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:19:52,435 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:19:52,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:19:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-10-02 12:19:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:52,501 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:52,501 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:52,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:52,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:52,502 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:52,502 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:52,502 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2006262148, now seen corresponding path program 107 times [2018-10-02 12:19:52,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:52,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:52,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:52,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:52,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:52,703 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:52,710 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:52,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:52,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:52,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:52,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:52,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:52,750 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:52,956 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:52,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:52,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:52,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:52,957 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:52,957 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:52,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:19:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2018-10-02 12:19:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:19:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:19:53,009 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15 [2018-10-02 12:19:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:53,010 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:19:53,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:19:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:53,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:53,010 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1] [2018-10-02 12:19:53,010 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:53,010 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:53,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1191907192, now seen corresponding path program 108 times [2018-10-02 12:19:53,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:53,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:53,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:53,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:53,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:53,072 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:53,078 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:53,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:53,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:53,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:53,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:53,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:53,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:53,127 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states. [2018-10-02 12:19:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:53,342 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:53,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:53,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:53,343 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:53,343 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:53,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-10-02 12:19:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:53,452 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:53,452 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:53,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:53,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:53,452 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:53,453 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:53,453 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1191909114, now seen corresponding path program 109 times [2018-10-02 12:19:53,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:53,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:53,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:53,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:53,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:53,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:53,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:53,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:53,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:53,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:53,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:53,893 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:54,100 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:54,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:54,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:54,101 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:54,101 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:54,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:19:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-10-02 12:19:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:54,185 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:54,185 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:54,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:54,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:54,186 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:54,186 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:54,186 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1193754234, now seen corresponding path program 110 times [2018-10-02 12:19:54,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:54,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:54,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:54,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:54,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:54,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:54,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:54,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:54,294 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:54,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:54,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:54,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:54,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:54,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:54,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:54,380 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:54,619 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:19:54,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:54,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:54,620 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:19:54,620 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:19:54,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:19:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-10-02 12:19:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:54,695 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:54,695 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:54,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:54,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:54,695 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:54,696 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:54,696 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1193756156, now seen corresponding path program 111 times [2018-10-02 12:19:54,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:54,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:54,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:54,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:54,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:54,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:54,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:54,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:54,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-02 12:19:54,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:54,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:54,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:54,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:54,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:54,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:54,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:54,878 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:55,143 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:19:55,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:55,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:55,143 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:19:55,143 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:19:55,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:19:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-10-02 12:19:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:19:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:19:55,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15 [2018-10-02 12:19:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:55,205 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:19:55,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:19:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:55,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:55,206 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1] [2018-10-02 12:19:55,206 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:55,206 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1328052742, now seen corresponding path program 112 times [2018-10-02 12:19:55,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:55,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:55,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:55,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:55,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:55,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:55,261 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:55,266 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:55,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:55,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:55,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:55,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:55,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:55,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:55,314 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states. [2018-10-02 12:19:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:55,509 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:55,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:55,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:55,510 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:55,510 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:55,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-10-02 12:19:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:55,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:55,586 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:55,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:55,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:55,586 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:55,587 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:55,587 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1328050820, now seen corresponding path program 113 times [2018-10-02 12:19:55,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:55,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:55,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:55,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:55,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:55,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:55,685 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:55,695 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:19:55,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:55,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:55,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:55,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:55,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:55,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:55,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:55,751 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:55,936 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:19:55,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:55,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:55,937 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:19:55,937 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:19:55,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:19:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2018-10-02 12:19:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:56,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2018-10-02 12:19:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:56,011 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:56,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:56,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:56,011 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1] [2018-10-02 12:19:56,011 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:56,012 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1326205700, now seen corresponding path program 114 times [2018-10-02 12:19:56,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:56,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:56,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:56,091 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:56,097 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:56,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:56,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:56,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:56,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:56,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:56,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:56,157 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states. [2018-10-02 12:19:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:56,341 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2018-10-02 12:19:56,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:56,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:56,341 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:19:56,342 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:19:56,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:19:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-10-02 12:19:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:56,422 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2018-10-02 12:19:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:56,422 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:56,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:19:56,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:56,422 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1] [2018-10-02 12:19:56,423 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:56,423 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:56,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1326203778, now seen corresponding path program 6 times [2018-10-02 12:19:56,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:56,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:56,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:56,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:56,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:56,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:56,518 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:19:56,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:56,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:56,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:19:56,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:19:56,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:19:56,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:56,573 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states. [2018-10-02 12:19:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:56,752 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2018-10-02 12:19:56,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:19:56,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-02 12:19:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:56,753 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:19:56,753 INFO L226 Difference]: Without dead ends: 30 [2018-10-02 12:19:56,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-02 12:19:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 18. [2018-10-02 12:19:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:19:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-10-02 12:19:56,802 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15 [2018-10-02 12:19:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:56,802 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-10-02 12:19:56,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:19:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-10-02 12:19:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:56,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:56,803 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1] [2018-10-02 12:19:56,803 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:56,803 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash -168156555, now seen corresponding path program 7 times [2018-10-02 12:19:56,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:56,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:56,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:56,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:56,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:56,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:56,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:56,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:56,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:56,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:56,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:56,947 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 10 states. [2018-10-02 12:19:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:57,405 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:19:57,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:19:57,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:19:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:57,407 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:19:57,407 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:19:57,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:19:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:19:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:19:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:19:57,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:19:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:57,495 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:19:57,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:19:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:19:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:57,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:57,496 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:19:57,496 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:57,496 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:57,496 INFO L82 PathProgramCache]: Analyzing trace with hash -168154633, now seen corresponding path program 115 times [2018-10-02 12:19:57,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:57,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:57,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:57,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:57,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:57,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:57,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:57,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:57,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:57,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:57,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:57,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:57,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:57,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:57,626 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:19:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:57,932 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:57,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:19:57,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:19:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:57,933 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:57,933 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:57,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:19:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:19:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:19:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:19:58,030 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:19:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:58,030 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:19:58,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:19:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:19:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:58,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:58,030 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:19:58,031 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:58,031 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash -166309513, now seen corresponding path program 116 times [2018-10-02 12:19:58,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:58,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:58,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:58,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:58,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:58,187 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:58,195 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:58,200 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:58,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:58,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:58,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:58,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:58,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:58,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:58,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:58,247 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:19:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:58,563 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:19:58,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:19:58,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:19:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:58,564 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:19:58,564 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:19:58,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:19:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:19:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:19:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:19:58,659 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:19:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:58,659 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:19:58,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:19:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:19:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:58,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:58,660 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:19:58,660 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:58,660 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash -166307591, now seen corresponding path program 117 times [2018-10-02 12:19:58,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:58,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:58,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:58,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:58,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:58,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:58,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:58,755 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:19:58,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:58,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:58,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:58,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:58,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:58,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:58,820 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:19:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:59,147 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:19:59,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:19:59,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:19:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:59,147 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:19:59,147 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:19:59,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:19:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:19:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:19:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:19:59,230 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:19:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:59,230 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:19:59,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:19:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:19:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:59,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:59,231 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:19:59,231 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:59,231 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1606850807, now seen corresponding path program 118 times [2018-10-02 12:19:59,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:59,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:59,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:59,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:59,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:59,309 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:59,314 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:59,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:59,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:59,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:59,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:59,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:59,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:59,377 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:19:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:59,669 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:19:59,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:19:59,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:19:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:59,670 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:19:59,670 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:19:59,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:19:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:19:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:19:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:19:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:19:59,766 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:19:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:59,766 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:19:59,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:19:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:19:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:19:59,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:59,766 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:19:59,766 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:59,766 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1606852729, now seen corresponding path program 119 times [2018-10-02 12:19:59,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:59,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:59,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:59,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:59,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:59,895 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:59,906 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:19:59,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:59,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:59,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:19:59,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:19:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:19:59,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:59,979 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:00,333 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:00,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:00,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:00,333 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:00,333 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:00,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2018-10-02 12:20:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:00,429 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:00,429 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:00,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:00,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:00,429 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:00,429 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:00,430 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1608697849, now seen corresponding path program 120 times [2018-10-02 12:20:00,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:00,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:00,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:00,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:00,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:00,671 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:00,679 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:00,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:00,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:00,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:00,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:00,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:00,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:00,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:00,731 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:01,023 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:01,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:01,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:01,024 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:01,024 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:01,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:01,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:01,124 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:01,125 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:01,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:01,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:01,125 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:01,125 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:01,125 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:01,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1608699771, now seen corresponding path program 121 times [2018-10-02 12:20:01,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:01,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:01,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:01,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:01,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:01,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:01,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:01,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:01,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:01,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:01,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:01,246 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:01,521 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:01,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:01,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:01,521 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:01,521 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:01,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-10-02 12:20:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:20:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:20:01,597 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:20:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:01,597 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:20:01,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:20:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:01,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:01,598 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:20:01,598 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:01,598 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash 511901815, now seen corresponding path program 122 times [2018-10-02 12:20:01,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:01,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:01,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:01,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:01,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:01,685 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:01,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:01,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:01,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:01,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:01,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:01,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:01,739 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:20:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:02,070 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:02,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:02,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:02,071 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:02,071 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:02,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:02,166 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:02,167 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:02,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:02,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:02,167 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:02,167 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:02,167 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash 511903737, now seen corresponding path program 123 times [2018-10-02 12:20:02,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:02,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:02,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:02,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:02,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:02,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:02,262 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:02,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:02,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:02,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:02,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:02,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:02,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:02,324 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:02,643 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:02,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:02,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:02,644 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:02,644 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:02,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:20:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:02,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:02,739 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:02,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:02,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:02,740 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:02,740 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:02,740 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:02,740 INFO L82 PathProgramCache]: Analyzing trace with hash 513748857, now seen corresponding path program 124 times [2018-10-02 12:20:02,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:02,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:02,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:02,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:02,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:02,828 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:02,833 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:02,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:02,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:02,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:02,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:02,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:02,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:02,877 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:03,205 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:03,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:03,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:03,206 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:03,206 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:03,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:03,299 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:03,299 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:03,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:03,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:03,300 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:03,300 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:03,300 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash 513750779, now seen corresponding path program 125 times [2018-10-02 12:20:03,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:03,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:03,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:03,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:03,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:03,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:03,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:03,376 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:03,384 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:03,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:03,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:03,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:03,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:03,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:03,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:03,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:03,450 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:03,776 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:03,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:03,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:03,777 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:03,777 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:03,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:20:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:03,862 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:03,862 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:03,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:03,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:03,863 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:03,863 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:03,863 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2008058119, now seen corresponding path program 126 times [2018-10-02 12:20:03,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:03,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:03,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:03,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:03,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:03,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:03,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:03,993 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:04,000 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:04,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:04,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:04,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:04,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:04,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:04,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:04,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:04,056 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:04,350 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:04,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:04,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:04,351 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:04,351 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:04,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:20:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:04,451 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:04,451 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:04,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:04,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:04,452 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:04,452 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:04,452 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:04,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2008056197, now seen corresponding path program 127 times [2018-10-02 12:20:04,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:04,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:04,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:04,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:04,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:05,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:05,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:05,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:05,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:05,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:05,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:05,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:05,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:05,330 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:05,643 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:05,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:05,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:05,644 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:05,644 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:05,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:20:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2018-10-02 12:20:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:05,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:05,739 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:05,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:05,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:05,740 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:05,740 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:05,740 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2006211077, now seen corresponding path program 128 times [2018-10-02 12:20:05,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:05,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:05,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:05,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:05,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:05,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:05,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:05,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:05,841 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:05,841 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:05,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:05,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:05,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:05,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:05,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:05,893 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:06,196 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:06,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:06,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:06,197 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:06,198 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:06,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:06,306 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:06,306 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:06,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:06,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:06,307 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:06,307 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:06,307 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2006209155, now seen corresponding path program 129 times [2018-10-02 12:20:06,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:06,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:06,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:06,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:06,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:06,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:06,391 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:06,392 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:06,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:06,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:06,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:06,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:06,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:06,455 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:06,742 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:06,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:06,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:06,743 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:06,743 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:06,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22. [2018-10-02 12:20:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:20:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:20:06,821 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17 [2018-10-02 12:20:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:06,821 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:20:06,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:20:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:06,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:06,821 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:20:06,822 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:06,822 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:06,822 INFO L82 PathProgramCache]: Analyzing trace with hash 532908023, now seen corresponding path program 130 times [2018-10-02 12:20:06,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:06,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:06,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:06,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:06,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:06,900 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:06,906 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:06,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:06,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:06,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:06,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:06,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:06,968 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states. [2018-10-02 12:20:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:07,270 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:07,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:07,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:07,271 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:07,271 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:07,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:07,379 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:07,379 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:07,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:07,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:07,379 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:07,380 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:07,380 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash 532909945, now seen corresponding path program 131 times [2018-10-02 12:20:07,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:07,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:07,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:07,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:07,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:07,458 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:07,467 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:07,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:07,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:07,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:07,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:07,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:07,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:07,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:07,566 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:07,858 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:07,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:07,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:07,859 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:07,859 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:07,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:20:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:07,964 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:07,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:07,964 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:07,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:07,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:07,965 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:07,965 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:07,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:07,965 INFO L82 PathProgramCache]: Analyzing trace with hash 534755065, now seen corresponding path program 132 times [2018-10-02 12:20:07,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:07,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:07,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:07,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:08,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:08,043 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:08,054 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:08,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:08,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:08,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:08,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:08,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:08,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:08,117 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:08,415 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:08,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:08,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:08,416 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:08,416 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:08,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-02 12:20:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:08,525 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:08,525 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:08,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:08,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:08,526 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:08,526 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:08,526 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash 534756987, now seen corresponding path program 133 times [2018-10-02 12:20:08,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:08,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:08,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:08,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:08,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:08,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:08,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:08,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:08,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:08,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:08,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:08,680 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:08,966 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:08,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:08,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:08,967 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:08,967 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:08,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:20:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:09,061 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:09,061 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:09,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:09,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:09,061 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:09,062 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:09,062 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1987051911, now seen corresponding path program 134 times [2018-10-02 12:20:09,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:09,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:09,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:09,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:09,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:09,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:09,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:09,260 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:09,260 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:09,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:09,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:09,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:09,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:09,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:09,306 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:09,639 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:09,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:09,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:09,640 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:09,641 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:09,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:20:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:09,740 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:09,740 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:09,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:09,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:09,741 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:09,741 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:09,741 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1987049989, now seen corresponding path program 135 times [2018-10-02 12:20:09,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:09,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:09,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:09,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:09,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:09,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:09,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:09,952 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:09,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:09,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:10,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:10,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:10,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:10,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:10,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:10,005 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:10,329 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:10,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:10,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:10,329 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:10,329 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:10,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:20:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:10,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:10,435 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:10,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:10,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:10,435 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:10,436 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:10,436 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:10,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1985204869, now seen corresponding path program 136 times [2018-10-02 12:20:10,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:10,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:10,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:10,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:10,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:10,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:10,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:10,552 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:10,558 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:10,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:10,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:10,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:10,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:10,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:10,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:10,608 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:10,910 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:10,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:10,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:10,911 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:10,911 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:10,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-02 12:20:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:11,033 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:11,033 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:11,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:11,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:11,033 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:11,033 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:11,034 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1985202947, now seen corresponding path program 137 times [2018-10-02 12:20:11,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:11,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:11,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:11,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:11,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:11,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:11,111 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:11,120 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:11,120 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:11,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:11,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:11,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:11,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:11,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:11,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:11,191 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:11,479 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:11,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:11,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:11,480 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:11,480 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:11,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:20:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:20:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:20:11,567 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:20:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:11,567 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:20:11,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:20:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:11,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:11,568 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:11,568 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:11,568 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1212966393, now seen corresponding path program 138 times [2018-10-02 12:20:11,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:11,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:11,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:11,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:11,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:11,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:11,646 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:11,657 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:11,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:11,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:11,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:11,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:11,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:11,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:11,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:11,720 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:20:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:12,002 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:12,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:12,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:12,003 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:12,003 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:12,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2018-10-02 12:20:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:12,123 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:12,123 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:12,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:12,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:12,124 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:12,124 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:12,124 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1212968315, now seen corresponding path program 139 times [2018-10-02 12:20:12,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:12,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:12,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:12,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:12,210 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:12,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:12,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:12,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:12,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:12,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:12,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:12,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:12,289 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:12,570 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:20:12,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:12,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:12,572 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:20:12,572 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:20:12,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:20:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-10-02 12:20:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:12,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:12,680 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:12,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:12,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:12,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:12,681 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:12,681 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:12,681 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1214813435, now seen corresponding path program 140 times [2018-10-02 12:20:12,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:12,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:12,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:12,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:12,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:12,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:12,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:12,752 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:12,775 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:12,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:12,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:12,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:12,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:12,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:12,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:12,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:12,833 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:13,131 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:13,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:13,131 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:13,132 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:13,132 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:13,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2018-10-02 12:20:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:13,260 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:13,260 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:13,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:13,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:13,261 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:13,261 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:13,261 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1214815357, now seen corresponding path program 141 times [2018-10-02 12:20:13,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:13,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:13,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:13,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:13,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:13,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:13,332 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:13,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:13,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:13,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:13,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:13,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:13,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:13,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:13,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:13,406 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:13,707 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:20:13,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:13,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:13,707 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:20:13,707 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:20:13,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:20:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:20:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:13,810 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:13,810 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:13,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:13,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:13,811 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:13,811 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:13,811 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:13,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1306993541, now seen corresponding path program 142 times [2018-10-02 12:20:13,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:13,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:13,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:13,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:13,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:13,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:13,882 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:13,889 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:13,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:13,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:13,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:13,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:13,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:13,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:13,947 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:14,236 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:20:14,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:14,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:14,237 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:20:14,237 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:20:14,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:20:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-10-02 12:20:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:14,357 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:14,357 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:14,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:14,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:14,357 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:14,357 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:14,357 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1306991619, now seen corresponding path program 143 times [2018-10-02 12:20:14,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:14,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:14,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:14,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:14,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:14,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:14,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:14,425 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:14,433 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:14,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:14,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:14,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:14,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:14,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:14,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:14,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:14,495 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:14,755 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:20:14,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:14,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:14,756 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:20:14,756 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:20:14,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:20:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-10-02 12:20:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:14,856 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:14,856 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:14,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:14,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:14,857 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:14,857 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:14,857 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1305146499, now seen corresponding path program 144 times [2018-10-02 12:20:14,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:14,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:14,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:14,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:14,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:14,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:14,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:14,949 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:14,958 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:14,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:14,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:15,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:15,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:15,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:15,004 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:15,295 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:20:15,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:15,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:15,295 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:20:15,295 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:20:15,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:20:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-10-02 12:20:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:15,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:15,401 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:15,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:15,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:15,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:15,402 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:15,402 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:15,402 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:15,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1305144577, now seen corresponding path program 145 times [2018-10-02 12:20:15,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:15,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:15,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:15,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:15,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:15,537 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:15,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:15,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:15,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:15,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:15,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:15,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:15,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:15,616 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:15,880 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2018-10-02 12:20:15,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:15,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:15,881 INFO L225 Difference]: With dead ends: 34 [2018-10-02 12:20:15,881 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:20:15,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:20:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2018-10-02 12:20:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:20:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:20:15,952 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17 [2018-10-02 12:20:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:15,952 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:20:15,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:20:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:15,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:15,952 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:20:15,953 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:15,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash -754962569, now seen corresponding path program 146 times [2018-10-02 12:20:15,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:15,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:15,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:15,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:16,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:16,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:16,033 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:16,039 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:16,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:16,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:16,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:16,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:16,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:16,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:16,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:16,093 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 10 states. [2018-10-02 12:20:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:16,471 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:16,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:16,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:16,472 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:16,472 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:16,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:16,599 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:16,600 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:16,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:16,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:16,600 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:16,600 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:16,600 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash -754960647, now seen corresponding path program 147 times [2018-10-02 12:20:16,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:16,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:16,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:16,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:16,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:16,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:16,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:16,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:16,678 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:16,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:16,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:16,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:16,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:16,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:16,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:16,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:16,742 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:17,133 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:17,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:17,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:17,134 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:17,134 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:17,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:20:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:17,303 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:17,303 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:17,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:17,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:17,304 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:17,304 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:17,304 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:17,304 INFO L82 PathProgramCache]: Analyzing trace with hash -753115527, now seen corresponding path program 148 times [2018-10-02 12:20:17,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:17,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:17,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:17,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:17,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:17,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:17,377 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:17,383 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:17,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:17,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:17,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:17,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:17,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:17,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:17,432 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:17,834 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:17,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:17,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:17,834 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:17,834 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:17,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:17,957 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:17,958 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:17,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:17,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:17,958 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:17,958 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:17,958 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:17,958 INFO L82 PathProgramCache]: Analyzing trace with hash -753113605, now seen corresponding path program 149 times [2018-10-02 12:20:17,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:17,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:17,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:17,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:18,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:18,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:18,065 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:18,073 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:18,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:18,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:18,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:18,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:18,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:18,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:18,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:18,116 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:18,486 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:18,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:18,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:18,487 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:18,487 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:18,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:20:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:18,600 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:18,601 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:18,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:18,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:18,601 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:18,601 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:18,601 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1020044793, now seen corresponding path program 150 times [2018-10-02 12:20:18,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:18,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:18,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:18,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:18,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:18,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:18,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:18,681 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:18,690 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:18,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:18,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:18,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:18,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:18,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:18,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:18,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:18,751 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:19,103 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:19,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:19,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:19,104 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:19,104 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:19,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:20:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:19,223 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:19,223 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:19,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:19,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:19,223 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:19,224 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:19,224 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1020046715, now seen corresponding path program 151 times [2018-10-02 12:20:19,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:19,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:19,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:19,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:19,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:19,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:19,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:19,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:19,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:19,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:19,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:19,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:19,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:19,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:19,356 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:19,714 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:19,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:19,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:19,715 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:19,715 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:19,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2018-10-02 12:20:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:19,837 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:19,837 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:19,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:19,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:19,838 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:19,838 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:19,838 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1021891835, now seen corresponding path program 152 times [2018-10-02 12:20:19,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:19,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:19,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:19,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:19,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:19,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:19,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:19,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:19,979 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:19,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:19,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:20,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:20,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:20,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:20,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:20,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:20,023 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:20,370 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:20,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:20,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:20,370 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:20,370 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:20,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:20,499 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:20,499 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:20,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:20,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:20,499 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:20,499 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:20,499 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1021893757, now seen corresponding path program 153 times [2018-10-02 12:20:20,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:20,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:20,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:20,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:20,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:20,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:20,612 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:20,621 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:20,630 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:20,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:20,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:20,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:20,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:20,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:20,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:20,703 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:21,078 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:21,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:21,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:21,079 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:21,079 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:21,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-10-02 12:20:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:20:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:20:21,183 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:20:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:21,183 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:20:21,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:20:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:21,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:21,183 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:21,184 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:21,184 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:21,184 INFO L82 PathProgramCache]: Analyzing trace with hash -74904199, now seen corresponding path program 154 times [2018-10-02 12:20:21,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:21,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:21,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:21,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:21,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:21,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:21,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:21,249 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:21,272 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:21,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:21,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:21,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:21,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:21,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:21,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:21,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:21,344 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:20:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:21,734 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:21,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:21,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:21,735 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:21,735 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:21,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:21,862 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:21,862 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:21,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:21,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:21,863 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:21,863 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:21,863 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash -74902277, now seen corresponding path program 155 times [2018-10-02 12:20:21,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:21,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:21,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:21,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:21,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:22,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:22,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:22,259 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:22,359 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:22,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:22,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:22,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:22,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:22,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:22,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:22,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:22,641 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:23,022 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:23,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:23,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:23,023 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:23,023 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:23,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:20:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-10-02 12:20:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:23,147 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:23,147 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:23,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:23,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:23,148 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:23,148 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:23,148 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -73057157, now seen corresponding path program 156 times [2018-10-02 12:20:23,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:23,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:23,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:23,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:23,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:23,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:23,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:23,243 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:23,251 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:23,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:23,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:23,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:23,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:23,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:23,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:23,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:23,331 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:23,699 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:23,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:23,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:23,700 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:23,700 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:23,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:23,833 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:23,833 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:23,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:23,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:23,833 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:23,834 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:23,834 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash -73055235, now seen corresponding path program 157 times [2018-10-02 12:20:23,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:23,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:23,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:23,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:23,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:23,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:23,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:23,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:23,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:23,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:23,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:23,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:23,984 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:24,362 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:24,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:24,362 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:24,363 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:24,363 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:24,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:20:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:24,482 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:24,482 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:24,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:24,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:24,482 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:24,483 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:24,483 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1700103163, now seen corresponding path program 158 times [2018-10-02 12:20:24,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:24,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:24,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:24,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:24,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:24,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:24,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:24,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:24,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:24,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:24,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:24,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:24,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:24,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:24,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:24,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:24,630 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:25,006 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:25,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:25,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:25,007 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:25,007 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:25,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:20:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:25,138 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:25,139 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:25,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:25,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:25,139 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:25,139 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:25,139 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:25,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1700105085, now seen corresponding path program 159 times [2018-10-02 12:20:25,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:25,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:25,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:25,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:25,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:25,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:25,225 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:25,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:25,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:25,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:25,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:25,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:25,299 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:25,676 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:25,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:25,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:25,677 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:25,677 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:25,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2018-10-02 12:20:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:25,804 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:25,804 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:25,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:25,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:25,804 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:25,805 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:25,805 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1701950205, now seen corresponding path program 160 times [2018-10-02 12:20:25,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:25,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:25,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:25,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:25,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:25,916 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:25,921 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:25,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:25,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:25,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:25,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:25,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:25,970 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:26,327 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:26,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:26,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:26,328 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:26,328 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:26,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:26,459 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:26,459 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:26,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:26,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:26,459 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:26,460 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:26,460 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:26,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1701952127, now seen corresponding path program 161 times [2018-10-02 12:20:26,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:26,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:26,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:26,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:26,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:26,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:26,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:26,562 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:26,587 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:26,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:26,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:26,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:26,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:26,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:26,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:26,633 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:27,500 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:27,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:27,500 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:27,501 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:27,501 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:27,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22. [2018-10-02 12:20:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:20:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:20:27,665 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17 [2018-10-02 12:20:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:27,665 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:20:27,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:20:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:27,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:27,665 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:27,665 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:27,665 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash -53897991, now seen corresponding path program 162 times [2018-10-02 12:20:27,666 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:27,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:27,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:27,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:27,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:27,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:27,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:27,752 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:27,760 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:27,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:27,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:27,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:27,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:27,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:27,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:27,827 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states. [2018-10-02 12:20:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:28,182 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:28,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:28,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:28,182 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:28,183 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:28,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:28,322 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:28,322 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:28,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:28,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:28,323 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:28,323 INFO L423 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:28,323 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:28,323 INFO L82 PathProgramCache]: Analyzing trace with hash -53896069, now seen corresponding path program 163 times [2018-10-02 12:20:28,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:28,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:28,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:28,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:28,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:28,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:28,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:28,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:28,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:28,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:28,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:28,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:28,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:28,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:28,521 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:29,039 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:29,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:29,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:29,040 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:29,040 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:29,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:20:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:29,174 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:29,174 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:29,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:29,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:29,175 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:29,175 INFO L423 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:29,175 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:29,175 INFO L82 PathProgramCache]: Analyzing trace with hash -52050949, now seen corresponding path program 164 times [2018-10-02 12:20:29,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:29,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:29,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:29,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:29,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:29,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:29,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:29,262 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:29,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:29,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:29,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:29,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:29,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:29,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:29,325 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:29,680 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:29,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:29,681 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:29,681 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:29,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-02 12:20:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:29,820 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:29,820 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:29,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:29,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:29,820 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:29,821 INFO L423 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:29,821 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash -52049027, now seen corresponding path program 165 times [2018-10-02 12:20:29,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:29,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:29,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:29,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:29,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:29,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:29,893 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:29,902 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:29,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:29,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:29,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:29,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:29,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:29,966 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:30,300 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:30,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:30,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:30,301 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:30,301 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:30,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2018-10-02 12:20:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:30,418 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:30,419 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:30,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:30,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:30,419 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:30,419 INFO L423 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:30,419 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1721109371, now seen corresponding path program 166 times [2018-10-02 12:20:30,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:30,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:30,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:30,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:30,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:30,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:30,493 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:30,498 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:30,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:30,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:30,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:30,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:30,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:30,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:30,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:30,553 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:30,923 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:30,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:30,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:30,924 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:30,924 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:30,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:20:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:31,058 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:31,059 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:31,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:31,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:31,059 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:31,059 INFO L423 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:31,059 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1721111293, now seen corresponding path program 167 times [2018-10-02 12:20:31,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:31,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:31,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:31,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:31,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:31,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:31,138 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:31,147 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:31,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:31,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:31,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:31,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:31,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:31,202 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:31,579 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:20:31,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:31,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:31,580 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:20:31,580 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:20:31,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:20:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:20:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:31,714 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:31,714 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:31,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:31,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:31,715 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:31,715 INFO L423 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:31,715 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1722956413, now seen corresponding path program 168 times [2018-10-02 12:20:31,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:31,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:31,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:31,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:31,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:31,782 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:31,790 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:31,798 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:31,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:31,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:31,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:31,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:31,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:31,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:31,866 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:32,215 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:20:32,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:32,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:32,216 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:20:32,216 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:20:32,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:20:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-02 12:20:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:32,363 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:32,363 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:32,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:32,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:32,363 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:32,364 INFO L423 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:32,364 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1722958335, now seen corresponding path program 169 times [2018-10-02 12:20:32,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:32,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:32,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:32,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:32,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:32,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:32,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:32,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:32,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:32,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:32,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:32,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:32,504 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:32,505 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:32,842 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:32,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:32,842 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:32,843 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:32,843 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:32,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-10-02 12:20:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:20:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:20:32,957 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:20:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:32,957 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:20:32,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:20:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:32,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:32,957 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:32,958 INFO L423 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:32,958 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:32,958 INFO L82 PathProgramCache]: Analyzing trace with hash 626160379, now seen corresponding path program 170 times [2018-10-02 12:20:32,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:32,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:32,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:32,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:33,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:33,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:33,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:33,269 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:33,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:33,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:33,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:33,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:33,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:33,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:33,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:33,312 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:20:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:33,642 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:33,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:33,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:33,643 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:33,643 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:33,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:20:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2018-10-02 12:20:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:33,786 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:33,786 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:33,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:33,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:33,786 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:33,786 INFO L423 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:33,787 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash 626162301, now seen corresponding path program 171 times [2018-10-02 12:20:33,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:33,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:33,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:33,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:33,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:33,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:33,855 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:33,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:33,874 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:33,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:33,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:33,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:33,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:33,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:33,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:33,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:33,937 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:34,273 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:20:34,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:34,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:34,274 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:20:34,274 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:20:34,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:20:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-10-02 12:20:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:34,405 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:34,405 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:34,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:34,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:34,405 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:34,405 INFO L423 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:34,405 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 628007421, now seen corresponding path program 172 times [2018-10-02 12:20:34,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:34,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:34,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:34,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:34,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:34,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:34,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:34,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:34,479 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:34,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:34,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:34,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:34,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:34,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:34,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:34,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:34,541 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:34,885 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:20:34,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:34,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:34,886 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:20:34,886 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:20:34,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:20:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2018-10-02 12:20:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:35,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:35,030 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:35,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:35,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:35,031 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:35,031 INFO L423 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:35,031 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash 628009343, now seen corresponding path program 173 times [2018-10-02 12:20:35,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:35,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:35,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:35,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:35,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:35,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:35,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:35,107 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:35,115 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:35,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:35,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:35,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:35,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:35,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:35,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:35,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:35,191 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:35,516 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:20:35,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:35,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:35,517 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:20:35,517 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:20:35,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:35,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:20:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-10-02 12:20:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:35,646 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:35,647 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:35,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:35,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:35,647 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:35,647 INFO L423 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:35,647 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1893799555, now seen corresponding path program 174 times [2018-10-02 12:20:35,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:35,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:35,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:35,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:35,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:35,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:35,773 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:35,781 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:35,805 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:35,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:35,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:35,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:35,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:35,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:35,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:35,873 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:36,225 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:20:36,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:36,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:36,225 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:20:36,226 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:20:36,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:20:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-10-02 12:20:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:36,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:36,369 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:36,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:36,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:36,370 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:36,370 INFO L423 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:36,370 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1893797633, now seen corresponding path program 175 times [2018-10-02 12:20:36,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:36,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:36,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:36,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:36,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:36,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:36,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:36,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:36,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:36,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:36,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:36,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:36,497 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:36,814 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:20:36,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:36,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:36,815 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:20:36,815 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:20:36,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:20:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-10-02 12:20:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:36,950 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:36,950 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:36,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:36,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:36,950 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:36,950 INFO L423 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:36,950 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1891952513, now seen corresponding path program 176 times [2018-10-02 12:20:36,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:36,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:36,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:36,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:37,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:37,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:37,018 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:37,023 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:37,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:37,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:37,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:37,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:37,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:37,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:37,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:37,076 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:37,401 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-10-02 12:20:37,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:37,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:37,402 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:20:37,402 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:20:37,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:20:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-10-02 12:20:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:37,543 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:37,543 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:37,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:37,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:37,544 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:20:37,544 INFO L423 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:37,544 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1891950591, now seen corresponding path program 177 times [2018-10-02 12:20:37,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:37,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:37,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:37,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:37,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:37,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:37,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:37,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:37,629 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:37,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:37,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:37,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:37,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:37,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:37,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:37,676 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:37,958 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2018-10-02 12:20:37,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:37,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:37,961 INFO L225 Difference]: With dead ends: 34 [2018-10-02 12:20:37,961 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:20:37,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:20:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2018-10-02 12:20:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:20:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:20:38,051 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17 [2018-10-02 12:20:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:38,052 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:20:38,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:20:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:38,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:38,052 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:20:38,052 INFO L423 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:38,052 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1448020233, now seen corresponding path program 178 times [2018-10-02 12:20:38,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:38,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:38,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:38,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:38,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:38,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:38,660 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:38,673 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:38,679 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:38,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:38,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:38,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:38,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:38,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:38,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:38,741 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 10 states. [2018-10-02 12:20:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:39,223 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:39,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:39,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:39,224 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:39,224 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:39,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:20:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2018-10-02 12:20:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:39,400 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:39,400 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:39,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:39,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:39,401 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:39,401 INFO L423 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:39,401 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1448018311, now seen corresponding path program 179 times [2018-10-02 12:20:39,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:39,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:39,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:39,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:39,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:39,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:39,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:39,482 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:39,493 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:39,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:39,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:39,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:39,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:39,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:39,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:39,555 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:40,077 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:40,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:40,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:40,078 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:40,078 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:40,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30. [2018-10-02 12:20:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:40,249 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:40,249 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:40,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:40,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:40,249 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:40,249 INFO L423 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:40,249 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:40,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1446173191, now seen corresponding path program 180 times [2018-10-02 12:20:40,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:40,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:40,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:40,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:40,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:40,316 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:40,324 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:40,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:40,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:40,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:40,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:40,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:40,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:40,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:40,392 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:40,906 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:20:40,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:40,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:40,907 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:20:40,907 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:20:40,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:20:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32. [2018-10-02 12:20:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:41,104 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:41,104 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:41,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:41,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:41,105 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:41,105 INFO L423 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:41,105 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:41,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1446171269, now seen corresponding path program 181 times [2018-10-02 12:20:41,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:41,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:41,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:41,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:41,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:41,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:41,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:41,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:41,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:41,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:41,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:41,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:41,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:41,300 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:41,787 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:20:41,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:41,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:41,788 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:20:41,789 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:20:41,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:20:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2018-10-02 12:20:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:41,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:41,946 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:41,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:41,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:41,946 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:41,946 INFO L423 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:41,946 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:41,946 INFO L82 PathProgramCache]: Analyzing trace with hash 326987129, now seen corresponding path program 182 times [2018-10-02 12:20:41,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:41,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:41,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:41,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:42,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:42,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:42,022 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:42,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:42,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:42,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:42,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:42,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:42,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:42,086 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:42,605 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:42,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:42,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:42,606 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:42,606 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:42,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2018-10-02 12:20:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:42,766 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:42,766 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:42,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:42,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:42,767 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:42,767 INFO L423 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:42,767 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash 326989051, now seen corresponding path program 183 times [2018-10-02 12:20:42,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:42,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:42,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:42,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:42,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:42,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:42,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:42,854 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:42,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:42,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:42,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:42,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:42,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:42,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:42,922 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:43,438 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:43,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:43,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:43,438 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:43,438 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:43,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30. [2018-10-02 12:20:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:43,610 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:43,610 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:43,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:43,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:43,611 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:43,611 INFO L423 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:43,611 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 328834171, now seen corresponding path program 184 times [2018-10-02 12:20:43,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:43,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:43,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:43,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:43,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:43,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:43,686 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:43,692 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:43,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:43,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:43,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:43,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:43,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:43,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:43,760 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:44,240 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:20:44,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:44,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:44,241 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:20:44,241 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:20:44,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:44,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:20:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32. [2018-10-02 12:20:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:44,418 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:44,418 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:44,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:44,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:44,419 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:44,419 INFO L423 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:44,419 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash 328836093, now seen corresponding path program 185 times [2018-10-02 12:20:44,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:44,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:44,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:44,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:44,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:44,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:44,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:44,491 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:44,501 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:44,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:44,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:44,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:44,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:44,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:44,566 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:45,215 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:20:45,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:45,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:45,216 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:20:45,216 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:20:45,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:20:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 26. [2018-10-02 12:20:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:20:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:20:45,359 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:20:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:45,359 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:20:45,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:20:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:45,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:45,360 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:45,360 INFO L423 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:45,360 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:45,360 INFO L82 PathProgramCache]: Analyzing trace with hash -767961863, now seen corresponding path program 186 times [2018-10-02 12:20:45,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:45,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:45,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:45,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:45,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:45,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:45,427 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:45,435 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:45,442 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:45,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:45,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:45,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:45,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:45,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:45,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:45,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:45,496 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:20:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:46,001 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:20:46,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:46,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:46,002 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:20:46,002 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:20:46,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:20:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:20:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:46,177 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:46,177 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:46,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:46,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:46,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:46,177 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:46,178 INFO L423 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:46,178 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:46,178 INFO L82 PathProgramCache]: Analyzing trace with hash -767959941, now seen corresponding path program 187 times [2018-10-02 12:20:46,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:46,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:46,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:46,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:46,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:46,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:46,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:46,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:46,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:46,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:46,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:46,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:46,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:46,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:46,443 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:46,925 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:20:46,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:46,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:46,926 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:20:46,926 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:20:46,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:20:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:20:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2018-10-02 12:20:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:47,102 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:47,102 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:47,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:47,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:47,102 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:47,102 INFO L423 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:47,102 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:47,103 INFO L82 PathProgramCache]: Analyzing trace with hash -766114821, now seen corresponding path program 188 times [2018-10-02 12:20:47,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:47,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:47,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:47,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:47,223 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:47,228 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:47,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:47,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:47,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:47,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:47,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:47,271 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:47,271 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:47,767 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:20:47,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:47,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:47,768 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:20:47,768 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:20:47,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:20:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:20:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:47,948 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:47,949 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:47,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:47,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:47,949 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:47,949 INFO L423 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:47,949 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:47,949 INFO L82 PathProgramCache]: Analyzing trace with hash -766112899, now seen corresponding path program 189 times [2018-10-02 12:20:47,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:47,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:47,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:47,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:49,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:49,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:49,052 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:49,154 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:49,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:49,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:49,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:49,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:49,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:49,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:49,465 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:50,015 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:20:50,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:50,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:50,016 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:20:50,016 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:20:50,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:20:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:20:50,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28. [2018-10-02 12:20:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:50,176 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:50,177 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:50,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:50,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:50,177 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:50,177 INFO L423 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:50,177 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:50,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1007045499, now seen corresponding path program 190 times [2018-10-02 12:20:50,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:50,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:50,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:50,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:50,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:50,266 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:50,274 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:50,280 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:50,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:50,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:50,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:50,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:50,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:50,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:50,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:50,343 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:50,806 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:50,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:50,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:50,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:50,807 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:50,807 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:50,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2018-10-02 12:20:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:50,985 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:50,985 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:50,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:50,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:50,985 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:50,986 INFO L423 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:50,986 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:50,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1007047421, now seen corresponding path program 191 times [2018-10-02 12:20:50,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:50,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:50,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:50,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:51,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:51,049 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:51,058 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:51,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:51,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:51,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:51,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:51,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:51,136 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:51,629 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:20:51,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:51,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:51,630 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:20:51,630 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:20:51,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:20:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:20:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:51,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:51,800 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:51,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:51,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:51,800 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:51,801 INFO L423 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:51,801 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1008892541, now seen corresponding path program 192 times [2018-10-02 12:20:51,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:51,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:51,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:51,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:51,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:51,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:51,877 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:51,887 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:51,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:51,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:51,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:51,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:51,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:51,950 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:52,416 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:20:52,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:52,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:52,416 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:20:52,417 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:20:52,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:20:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:20:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:52,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:52,597 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:52,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:52,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:52,598 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:52,598 INFO L423 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:52,598 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1008894463, now seen corresponding path program 193 times [2018-10-02 12:20:52,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:52,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:52,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:52,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:52,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:52,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:52,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:52,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:52,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:52,718 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:53,132 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:20:53,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:53,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:53,133 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:20:53,133 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:20:53,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:20:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24. [2018-10-02 12:20:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:20:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:20:53,269 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:20:53,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:53,270 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:20:53,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:20:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:53,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:53,270 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:53,270 INFO L423 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:53,270 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:53,270 INFO L82 PathProgramCache]: Analyzing trace with hash -746955655, now seen corresponding path program 194 times [2018-10-02 12:20:53,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:53,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:53,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:53,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:53,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:53,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:53,351 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:53,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:53,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:53,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:53,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:53,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:53,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:53,405 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:20:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:53,944 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:53,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:53,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:53,945 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:53,945 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:53,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2018-10-02 12:20:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:54,135 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,135 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:54,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:54,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,135 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:54,136 INFO L423 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,136 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,136 INFO L82 PathProgramCache]: Analyzing trace with hash -746953733, now seen corresponding path program 195 times [2018-10-02 12:20:54,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:54,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:54,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:54,220 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:54,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:54,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:54,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:54,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:54,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:54,286 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,844 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:54,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:54,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,845 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:54,845 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:54,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30. [2018-10-02 12:20:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:55,028 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:55,028 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:55,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:55,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:55,028 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:55,029 INFO L423 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:55,029 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash -745108613, now seen corresponding path program 196 times [2018-10-02 12:20:55,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:55,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:55,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:55,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:55,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:55,112 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:55,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:55,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:55,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:55,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:55,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:55,180 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:55,717 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:20:55,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:55,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:55,718 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:20:55,718 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:20:55,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:20:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32. [2018-10-02 12:20:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:55,908 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:55,908 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:55,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:55,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:55,908 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:55,909 INFO L423 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:55,909 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -745106691, now seen corresponding path program 197 times [2018-10-02 12:20:55,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:55,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:55,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:55,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:55,979 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:55,988 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:20:55,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:55,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:56,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:56,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,037 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:56,528 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:20:56,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:56,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:56,528 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:20:56,528 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:20:56,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:20:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2018-10-02 12:20:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:20:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:20:56,700 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:20:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:56,700 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:20:56,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:20:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:56,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:56,700 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:56,700 INFO L423 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:56,700 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1028051707, now seen corresponding path program 198 times [2018-10-02 12:20:56,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:56,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:56,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:56,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:56,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:56,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:56,785 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:20:56,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:56,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:56,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:56,849 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,849 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:20:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:57,396 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:57,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:57,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:57,396 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:57,396 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:57,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2018-10-02 12:20:57,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:57,577 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:57,577 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:57,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:57,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:57,578 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:57,578 INFO L423 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:57,578 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1028053629, now seen corresponding path program 199 times [2018-10-02 12:20:57,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:57,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:57,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:57,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:57,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:57,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:57,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:57,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:57,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:57,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:57,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:57,707 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:20:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:58,285 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:20:58,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:58,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:58,286 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:20:58,286 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:20:58,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:20:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30. [2018-10-02 12:20:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:20:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:20:58,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:20:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:58,476 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:20:58,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:20:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:58,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:58,476 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:20:58,477 INFO L423 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:58,477 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1029898749, now seen corresponding path program 200 times [2018-10-02 12:20:58,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:58,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:58,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:58,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:58,567 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:58,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:58,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:58,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:58,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:58,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:58,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:58,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:58,618 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:20:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:59,153 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:20:59,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:59,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:20:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:59,153 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:20:59,154 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:20:59,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:20:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32. [2018-10-02 12:20:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:20:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:20:59,350 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:20:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:59,350 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:20:59,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:20:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:59,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:59,350 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:20:59,351 INFO L423 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:59,351 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1029900671, now seen corresponding path program 201 times [2018-10-02 12:20:59,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:59,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:59,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:59,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:59,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:59,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:59,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:59,436 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:20:59,436 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:59,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:59,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:59,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:20:59,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:59,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:59,490 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:00,009 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:21:00,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:00,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:00,010 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:00,010 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:00,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 26. [2018-10-02 12:21:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:21:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:21:00,176 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:21:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:00,176 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:21:00,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:21:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:00,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:00,176 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:00,176 INFO L423 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:00,176 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -66897285, now seen corresponding path program 202 times [2018-10-02 12:21:00,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:00,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:00,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:00,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:00,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:00,258 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:00,264 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:00,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:00,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:00,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:00,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:00,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:00,319 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:21:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:00,838 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:21:00,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:00,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:00,839 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:00,839 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:00,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:21:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:01,039 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:01,040 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:01,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:01,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:01,040 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:01,040 INFO L423 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:01,040 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:01,040 INFO L82 PathProgramCache]: Analyzing trace with hash -66895363, now seen corresponding path program 203 times [2018-10-02 12:21:01,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:01,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:01,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:01,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:01,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:01,118 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:01,126 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:01,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:01,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:01,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:01,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:01,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:01,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:01,180 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:01,675 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:01,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:01,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:01,675 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:01,675 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:01,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2018-10-02 12:21:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:01,866 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:01,866 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:01,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:01,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:01,866 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:01,866 INFO L423 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:01,867 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -65050243, now seen corresponding path program 204 times [2018-10-02 12:21:01,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:01,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:01,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:01,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:01,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:01,964 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:01,971 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:01,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:01,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:02,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:02,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:02,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:02,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:02,020 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:02,549 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:21:02,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:02,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:02,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:02,550 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:02,550 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:02,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:21:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:02,747 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:02,748 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:02,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:02,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:02,748 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:02,748 INFO L423 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:02,748 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash -65048321, now seen corresponding path program 205 times [2018-10-02 12:21:02,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:02,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:02,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:02,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:02,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:02,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:02,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:02,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:02,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:02,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:02,892 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:03,404 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:03,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:03,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:03,405 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:03,405 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:03,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28. [2018-10-02 12:21:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:03,574 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:21:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:03,574 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:03,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:03,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:03,575 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:03,575 INFO L423 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:03,575 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1708110077, now seen corresponding path program 206 times [2018-10-02 12:21:03,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:03,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:03,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:03,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:03,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:03,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:03,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:03,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:03,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:03,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:03,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:03,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:03,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:03,705 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:21:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:04,175 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:04,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:04,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:04,176 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:04,176 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:04,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2018-10-02 12:21:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:04,375 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:04,375 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:04,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:04,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:04,376 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:04,376 INFO L423 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:04,376 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1708111999, now seen corresponding path program 207 times [2018-10-02 12:21:04,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:04,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:04,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:04,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:04,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:04,612 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:04,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:04,627 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:04,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:04,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:04,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:04,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:04,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:04,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:04,693 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:05,177 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:05,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:05,177 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:05,177 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:05,177 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:05,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:21:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:21:05,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:05,373 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:05,373 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:05,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:05,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:05,374 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:05,374 INFO L423 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:05,374 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1709957119, now seen corresponding path program 208 times [2018-10-02 12:21:05,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:05,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:05,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:05,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:05,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:05,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:05,439 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:05,444 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:05,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:05,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:05,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:05,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:05,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:05,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:05,528 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:06,006 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:06,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:06,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:06,007 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:06,007 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:06,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:21:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:06,209 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:06,210 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:06,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:06,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:06,210 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:06,210 INFO L423 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:06,210 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:06,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1709959041, now seen corresponding path program 209 times [2018-10-02 12:21:06,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:06,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:06,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:06,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:06,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:06,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:06,287 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:06,295 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:06,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:06,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:06,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:06,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:06,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:06,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:06,360 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:06,800 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:06,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:06,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:06,801 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:06,801 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:06,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 22. [2018-10-02 12:21:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:21:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:21:06,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17 [2018-10-02 12:21:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:06,931 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:21:06,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:21:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:06,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:06,931 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:06,931 INFO L423 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:06,931 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:06,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2034826247, now seen corresponding path program 210 times [2018-10-02 12:21:06,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:06,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:06,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:06,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:06,996 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:07,003 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:07,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:07,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:07,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:07,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:07,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:07,066 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states. [2018-10-02 12:21:07,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:07,597 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:07,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:07,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:07,598 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:07,598 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:07,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:21:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:07,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:07,814 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:07,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:07,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:07,814 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:07,814 INFO L423 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:07,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:07,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2034824325, now seen corresponding path program 211 times [2018-10-02 12:21:07,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:07,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:07,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:07,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:07,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:07,880 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:07,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:07,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,942 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:07,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:07,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:07,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:07,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:07,943 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:08,487 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:08,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:08,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:08,488 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:08,488 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:08,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:21:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:08,702 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:08,702 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:08,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:08,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:08,702 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:08,703 INFO L423 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:08,703 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2032979205, now seen corresponding path program 212 times [2018-10-02 12:21:08,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:08,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:08,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:08,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:08,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:08,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:08,776 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:08,782 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:08,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:08,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:08,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:08,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:08,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:08,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:08,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:08,848 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:09,388 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:09,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:09,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:09,388 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:09,389 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:09,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:21:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:09,609 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:09,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:09,609 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:09,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:09,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:09,610 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:09,610 INFO L423 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:09,610 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:09,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2032977283, now seen corresponding path program 213 times [2018-10-02 12:21:09,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:09,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:09,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:09,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:09,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:09,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:09,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:09,692 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:09,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:09,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:09,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:09,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:09,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:09,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:09,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:09,758 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:10,283 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:10,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:10,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:10,284 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:10,284 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:10,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 28. [2018-10-02 12:21:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:10,472 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:21:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:10,472 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:10,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:10,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:10,472 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:10,473 INFO L423 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:10,473 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash -259818885, now seen corresponding path program 214 times [2018-10-02 12:21:10,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:10,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:10,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:10,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:10,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:10,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:10,541 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:10,546 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:10,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:10,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:10,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:10,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:10,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:10,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:10,675 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:21:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:11,178 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:11,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:11,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:11,179 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:11,179 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:11,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:21:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:11,398 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:11,399 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:11,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:11,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:11,399 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:11,399 INFO L423 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:11,399 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:11,400 INFO L82 PathProgramCache]: Analyzing trace with hash -259816963, now seen corresponding path program 215 times [2018-10-02 12:21:11,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:11,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:11,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:11,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:11,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:11,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:11,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:11,523 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:11,532 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:11,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:11,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:11,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:11,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:11,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:11,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:11,605 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:12,140 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:12,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:12,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:12,141 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:12,141 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:12,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2018-10-02 12:21:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:12,357 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:12,357 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:12,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:12,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:12,358 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:12,358 INFO L423 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:12,358 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash -257971843, now seen corresponding path program 216 times [2018-10-02 12:21:12,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:12,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:12,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:12,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:12,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:12,426 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:12,434 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:12,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:12,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:12,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:12,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:12,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:12,497 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:12,985 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:12,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:12,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:12,986 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:12,986 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:12,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2018-10-02 12:21:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:13,205 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:13,205 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:13,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:13,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:13,206 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:13,206 INFO L423 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:13,206 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash -257969921, now seen corresponding path program 217 times [2018-10-02 12:21:13,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:13,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:13,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:13,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:13,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:13,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:13,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:13,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:13,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:13,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:13,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:13,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:13,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:13,354 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:13,819 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:21:13,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:13,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:13,820 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:21:13,820 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:21:13,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:21:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2018-10-02 12:21:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:21:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:21:13,999 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:21:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:13,999 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:21:13,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:21:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:14,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:14,000 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:14,000 INFO L423 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:14,000 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1354767877, now seen corresponding path program 218 times [2018-10-02 12:21:14,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:14,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:14,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:14,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:14,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:14,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:14,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:14,071 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:14,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:14,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:14,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:14,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:14,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:14,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:14,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:14,124 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:21:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:14,708 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:14,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:14,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:14,709 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:14,709 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:14,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:21:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:14,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:14,951 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:14,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:14,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:14,952 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:14,952 INFO L423 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:14,952 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1354765955, now seen corresponding path program 219 times [2018-10-02 12:21:14,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:14,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:14,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:14,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:15,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:15,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:15,038 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:15,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:15,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:15,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:15,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:15,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:15,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:15,565 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:17,036 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:17,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:17,036 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:17,037 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:17,037 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:17,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.0s impTime [2018-10-02 12:21:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2018-10-02 12:21:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:17,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:17,255 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:17,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:17,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:17,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:17,256 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:17,256 INFO L423 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:17,256 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1352920835, now seen corresponding path program 220 times [2018-10-02 12:21:17,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:17,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:17,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:17,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:17,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:17,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:17,335 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:17,341 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:17,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:17,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:17,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:17,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:17,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:17,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:17,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:17,392 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:17,953 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:17,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:17,953 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:17,954 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:17,954 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:17,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:21:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:18,179 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:18,179 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:18,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:18,179 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:18,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:18,180 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:18,180 INFO L423 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:18,180 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:18,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1352918913, now seen corresponding path program 221 times [2018-10-02 12:21:18,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:18,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:18,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:18,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:18,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:18,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:18,258 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:18,266 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:18,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:18,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:18,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:18,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:18,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:18,329 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:18,854 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:18,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:18,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:18,855 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:18,855 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:18,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 28. [2018-10-02 12:21:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:19,061 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:21:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:19,061 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:19,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:19,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:19,061 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:19,061 INFO L423 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:19,062 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash 420239485, now seen corresponding path program 222 times [2018-10-02 12:21:19,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:19,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:19,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:19,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:19,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:19,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:19,138 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:19,146 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:19,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:19,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:19,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:19,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:19,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:19,210 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:21:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:19,725 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:19,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:19,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:19,725 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:19,725 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:19,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:21:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:19,952 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:19,952 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:19,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:19,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:19,952 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:19,953 INFO L423 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:19,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:19,953 INFO L82 PathProgramCache]: Analyzing trace with hash 420241407, now seen corresponding path program 223 times [2018-10-02 12:21:19,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:19,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:19,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:19,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:20,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:20,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:20,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:20,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:20,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:20,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:20,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:20,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:20,100 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:20,618 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:20,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:20,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:20,619 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:20,619 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:20,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2018-10-02 12:21:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:20,819 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:20,819 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:20,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:20,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:20,819 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:20,820 INFO L423 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:20,820 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash 422086527, now seen corresponding path program 224 times [2018-10-02 12:21:20,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:20,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:20,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:20,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:20,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:20,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:20,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:20,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:20,899 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:20,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:20,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:20,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:20,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:20,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:20,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:20,950 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:21,463 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:21,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:21,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:21,464 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:21,464 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:21,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2018-10-02 12:21:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:21,686 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:21,686 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:21,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:21,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:21,687 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:21,687 INFO L423 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:21,687 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash 422088449, now seen corresponding path program 225 times [2018-10-02 12:21:21,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:21,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:21,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:21,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:21,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:21,741 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:21,749 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:21,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:21,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:21,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:21,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:21,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:21,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:21,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:21,838 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:22,325 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:21:22,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:22,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:22,325 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:21:22,325 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:21:22,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:21:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 24. [2018-10-02 12:21:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:21:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:21:22,482 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17 [2018-10-02 12:21:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:22,482 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:21:22,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:21:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:22,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:22,482 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:22,482 INFO L423 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:22,483 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1333761669, now seen corresponding path program 226 times [2018-10-02 12:21:22,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:22,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:22,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:22,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:23,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:23,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:23,602 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:23,633 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:23,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:23,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:23,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:23,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:23,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:23,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:23,719 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states. [2018-10-02 12:21:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:24,223 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:24,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:24,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:24,223 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:24,223 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:24,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:21:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2018-10-02 12:21:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:24,460 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:24,460 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:24,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:24,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:24,460 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:24,461 INFO L423 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:24,461 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1333759747, now seen corresponding path program 227 times [2018-10-02 12:21:24,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:24,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:24,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:24,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:24,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:24,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:24,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:24,530 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:24,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:24,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:24,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:24,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:24,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:24,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:24,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:24,602 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:25,115 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:25,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:25,115 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:25,116 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:25,116 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:25,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:21:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:25,345 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:25,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:25,345 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:25,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:25,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:25,345 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:25,346 INFO L423 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:25,346 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1331914627, now seen corresponding path program 228 times [2018-10-02 12:21:25,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:25,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:25,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:25,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:25,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:25,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:25,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:25,411 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:25,421 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:25,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:25,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:25,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:25,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:25,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:25,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:25,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:25,474 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:25,963 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:21:25,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:25,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:25,964 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:21:25,964 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:21:25,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:21:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2018-10-02 12:21:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:26,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:26,201 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:26,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:26,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:26,201 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:26,201 INFO L423 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:26,202 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1331912705, now seen corresponding path program 229 times [2018-10-02 12:21:26,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:26,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:26,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:26,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:26,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:26,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:26,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:26,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:26,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:26,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:26,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:26,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:26,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:26,337 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:26,828 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:21:26,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:26,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:26,829 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:21:26,829 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:21:26,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:21:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-10-02 12:21:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:27,047 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:21:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:27,047 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:27,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:27,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:27,047 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:27,047 INFO L423 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:27,047 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash 441245693, now seen corresponding path program 230 times [2018-10-02 12:21:27,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:27,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:27,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:27,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:27,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:27,146 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:27,154 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:27,162 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:27,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:27,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:27,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:27,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:27,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:27,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:27,239 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:21:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:27,754 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:27,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:27,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:27,755 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:27,755 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:27,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2018-10-02 12:21:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:27,985 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:27,986 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:27,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:27,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:27,986 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:27,986 INFO L423 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:27,986 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash 441247615, now seen corresponding path program 231 times [2018-10-02 12:21:27,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:27,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:27,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:27,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:28,052 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:28,063 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:28,070 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:28,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:28,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:28,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:28,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:28,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:28,258 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:28,767 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:21:28,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:28,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:28,767 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:28,768 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:28,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:21:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2018-10-02 12:21:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:28,999 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:29,000 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:29,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:29,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:29,000 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:29,000 INFO L423 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:29,000 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 443092735, now seen corresponding path program 232 times [2018-10-02 12:21:29,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:29,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:29,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:29,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:29,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:29,078 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:29,083 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:29,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:29,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:29,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:29,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:29,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:29,143 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:29,635 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:21:29,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:29,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:29,635 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:21:29,635 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:21:29,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:21:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2018-10-02 12:21:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:29,870 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:29,871 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:29,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:29,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:29,871 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:29,871 INFO L423 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:29,871 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash 443094657, now seen corresponding path program 233 times [2018-10-02 12:21:29,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:29,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:29,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:29,950 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:29,958 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:29,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:29,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:30,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:30,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:30,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:30,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:30,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:30,008 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:30,465 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:21:30,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:30,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:30,466 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:21:30,466 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:21:30,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:21:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2018-10-02 12:21:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:21:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:21:30,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17 [2018-10-02 12:21:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:30,662 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:21:30,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:21:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:30,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:30,663 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1] [2018-10-02 12:21:30,663 INFO L423 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:30,663 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:30,663 INFO L82 PathProgramCache]: Analyzing trace with hash -653703299, now seen corresponding path program 234 times [2018-10-02 12:21:30,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:30,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:30,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:30,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:30,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:30,722 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:30,730 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:30,739 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:30,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:30,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:30,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:30,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:30,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:30,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:30,794 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states. [2018-10-02 12:21:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:31,260 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:21:31,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:31,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:31,261 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:21:31,261 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:21:31,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:21:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2018-10-02 12:21:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:31,503 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:31,504 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:31,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:31,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:31,504 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:31,504 INFO L423 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:31,505 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash -653701377, now seen corresponding path program 235 times [2018-10-02 12:21:31,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:31,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:31,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:31,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:31,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:31,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:31,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:31,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:31,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:31,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:31,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:31,635 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:32,108 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:21:32,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:32,108 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:32,109 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:21:32,109 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:21:32,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:21:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2018-10-02 12:21:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:32,342 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:32,342 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:32,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:32,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:32,343 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:32,343 INFO L423 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:32,343 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -651856257, now seen corresponding path program 236 times [2018-10-02 12:21:32,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:32,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:32,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:32,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:32,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:32,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:32,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:32,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:32,461 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:32,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:32,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:32,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:32,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:32,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:32,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:32,539 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:33,000 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:21:33,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:33,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:33,001 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:21:33,001 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:21:33,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:21:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2018-10-02 12:21:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:33,238 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:33,239 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:33,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:33,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:33,239 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:33,239 INFO L423 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:33,239 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash -651854335, now seen corresponding path program 237 times [2018-10-02 12:21:33,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:33,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:33,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:33,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:33,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:33,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:33,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:33,329 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-02 12:21:33,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:33,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:33,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:33,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:33,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:33,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:33,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:33,394 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:33,840 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:21:33,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:33,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:33,841 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:21:33,841 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:21:33,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:21:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-10-02 12:21:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:34,057 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17 [2018-10-02 12:21:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:34,058 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:34,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:34,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:34,058 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1] [2018-10-02 12:21:34,058 INFO L423 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:34,058 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1121304063, now seen corresponding path program 238 times [2018-10-02 12:21:34,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:34,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:34,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:34,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:34,122 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:34,127 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:34,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:34,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:34,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:34,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:34,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:34,178 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states. [2018-10-02 12:21:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:34,602 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:21:34,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:34,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:34,603 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:21:34,603 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:21:34,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:21:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-10-02 12:21:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:34,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:34,844 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:34,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:34,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:34,844 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:34,844 INFO L423 AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:34,845 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1121305985, now seen corresponding path program 239 times [2018-10-02 12:21:34,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:34,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:34,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:34,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:34,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:34,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:34,920 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:34,930 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-10-02 12:21:34,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:34,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:34,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:34,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:34,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:34,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:34,984 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:35,418 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:21:35,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:35,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:35,419 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:21:35,419 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:21:35,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:21:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2018-10-02 12:21:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:35,655 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17 [2018-10-02 12:21:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:35,655 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:35,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:35,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:35,655 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1] [2018-10-02 12:21:35,655 INFO L423 AbstractCegarLoop]: === Iteration 254 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:35,655 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1123151105, now seen corresponding path program 240 times [2018-10-02 12:21:35,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:35,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:35,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:35,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:35,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:35,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:35,723 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:35,731 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:21:35,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:35,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:35,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:35,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:35,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:35,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:35,785 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states. [2018-10-02 12:21:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:36,191 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2018-10-02 12:21:36,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:36,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:36,192 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:21:36,192 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:21:36,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:21:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-10-02 12:21:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:36,443 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17 [2018-10-02 12:21:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:36,443 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:36,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:21:36,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:36,444 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1] [2018-10-02 12:21:36,444 INFO L423 AbstractCegarLoop]: === Iteration 255 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:36,444 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:36,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1123153027, now seen corresponding path program 7 times [2018-10-02 12:21:36,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:36,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:36,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:36,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:36,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:36,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:36,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:36,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:36,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:36,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:36,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:21:36,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:21:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:21:36,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:36,597 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states. [2018-10-02 12:21:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:36,972 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2018-10-02 12:21:36,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:21:36,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-02 12:21:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:36,973 INFO L225 Difference]: With dead ends: 36 [2018-10-02 12:21:36,973 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:21:36,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:21:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20. [2018-10-02 12:21:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:21:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2018-10-02 12:21:37,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17 [2018-10-02 12:21:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:37,123 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-02 12:21:37,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:21:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-02 12:21:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:37,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:37,123 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1] [2018-10-02 12:21:37,123 INFO L423 AbstractCegarLoop]: === Iteration 256 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:37,124 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:37,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1610002744, now seen corresponding path program 8 times [2018-10-02 12:21:37,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:37,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:37,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:37,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:37,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:37,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:37,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:37,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:37,270 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:37,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:37,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:37,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:37,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:37,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:37,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:37,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:37,352 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 11 states. [2018-10-02 12:21:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:38,101 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:38,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:38,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:38,103 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:38,104 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:38,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:21:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:38,405 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:38,406 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:38,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:38,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:38,406 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:21:38,407 INFO L423 AbstractCegarLoop]: === Iteration 257 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:38,407 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1610004666, now seen corresponding path program 241 times [2018-10-02 12:21:38,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:38,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:38,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:38,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:38,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:38,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:38,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:38,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:38,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:38,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:38,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:38,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:38,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:38,578 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:38,578 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:39,318 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:39,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:39,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:39,319 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:39,319 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:39,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:21:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:39,602 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:21:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:39,603 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:39,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:39,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:39,603 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:21:39,603 INFO L423 AbstractCegarLoop]: === Iteration 258 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:39,603 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1611849786, now seen corresponding path program 242 times [2018-10-02 12:21:39,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:39,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:39,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:40,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:40,983 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:40,997 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:41,029 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:41,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:41,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:41,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:41,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:41,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:41,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:41,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:41,346 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:21:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:42,058 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:21:42,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:42,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:42,059 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:21:42,059 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:21:42,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime [2018-10-02 12:21:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:21:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:21:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:42,359 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:42,359 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:42,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:42,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:42,359 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:42,359 INFO L423 AbstractCegarLoop]: === Iteration 259 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:42,359 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:42,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1611851708, now seen corresponding path program 243 times [2018-10-02 12:21:42,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:42,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:42,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:42,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:42,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:42,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:42,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:42,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:42,474 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:21:42,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:42,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:42,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:42,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:42,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:42,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:42,554 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:43,281 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:21:43,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:43,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:43,282 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:21:43,282 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:21:43,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:21:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2018-10-02 12:21:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:43,538 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:21:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:43,538 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:43,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:43,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:43,539 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:21:43,539 INFO L423 AbstractCegarLoop]: === Iteration 260 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:43,539 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -909957190, now seen corresponding path program 244 times [2018-10-02 12:21:43,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:43,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:43,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:43,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:43,625 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:43,632 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:43,638 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:43,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:43,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:43,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:43,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:43,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:43,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:43,687 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:21:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:44,430 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:44,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:44,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:44,430 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:44,430 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:44,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:21:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:44,728 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:44,728 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:44,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:44,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:44,728 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:44,728 INFO L423 AbstractCegarLoop]: === Iteration 261 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:44,729 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -909955268, now seen corresponding path program 245 times [2018-10-02 12:21:44,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:44,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:44,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:44,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:44,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:44,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:44,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:44,802 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:44,813 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:21:44,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:44,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:44,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:44,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:44,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:44,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:44,869 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:45,637 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:45,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:45,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:45,637 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:45,637 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:45,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:21:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:45,914 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:21:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:45,914 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:45,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:45,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:45,914 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:45,915 INFO L423 AbstractCegarLoop]: === Iteration 262 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:45,915 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash -908110148, now seen corresponding path program 246 times [2018-10-02 12:21:45,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:45,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:45,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:45,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:45,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:45,994 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:46,002 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:46,018 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:21:46,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:46,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:46,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:46,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:46,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:46,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:46,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:46,074 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:21:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:46,798 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:21:46,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:46,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:46,799 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:21:46,799 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:21:46,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:21:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:21:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:47,072 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:47,072 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:47,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:47,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:47,073 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:21:47,073 INFO L423 AbstractCegarLoop]: === Iteration 263 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:47,073 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash -908108226, now seen corresponding path program 247 times [2018-10-02 12:21:47,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:47,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:47,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:47,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:47,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:47,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:47,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:47,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:47,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:47,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:47,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:47,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:47,227 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:47,919 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:21:47,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:47,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:47,920 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:21:47,920 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:21:47,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:21:48,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2018-10-02 12:21:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:21:48,170 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19 [2018-10-02 12:21:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:48,170 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:21:48,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:21:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:48,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:48,171 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:21:48,171 INFO L423 AbstractCegarLoop]: === Iteration 264 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:48,171 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:48,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2004906182, now seen corresponding path program 248 times [2018-10-02 12:21:48,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:48,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:48,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:48,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:48,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:48,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:48,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:48,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:48,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:48,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:48,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:48,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:48,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:48,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:48,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:48,323 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states. [2018-10-02 12:21:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:49,020 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:21:49,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:49,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:49,020 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:21:49,021 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:21:49,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:21:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:21:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:49,315 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:49,315 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:49,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:49,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:49,315 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:49,315 INFO L423 AbstractCegarLoop]: === Iteration 265 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:49,315 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2004904260, now seen corresponding path program 249 times [2018-10-02 12:21:49,316 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:49,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:49,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:49,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:49,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:49,413 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:21:49,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:49,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:49,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:49,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:49,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:49,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:49,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:49,510 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:50,184 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:21:50,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:50,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:50,185 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:50,185 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:50,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:21:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:50,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:21:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:50,451 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:50,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:50,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:50,452 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:50,452 INFO L423 AbstractCegarLoop]: === Iteration 266 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:50,452 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:50,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2003059140, now seen corresponding path program 250 times [2018-10-02 12:21:50,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:50,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:50,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:50,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:50,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:50,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:50,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:50,532 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:50,538 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:50,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:50,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:50,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:50,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:50,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:50,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:50,595 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:21:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:51,301 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:21:51,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:51,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:51,301 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:21:51,301 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:21:51,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:21:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:21:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:51,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:51,594 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:51,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:51,594 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:51,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:51,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:51,595 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:21:51,595 INFO L423 AbstractCegarLoop]: === Iteration 267 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:51,595 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:51,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2003057218, now seen corresponding path program 251 times [2018-10-02 12:21:51,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:51,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:51,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:51,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:51,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:51,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:51,713 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:51,722 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:51,733 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:21:51,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:51,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:51,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:51,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:51,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:51,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:51,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:51,777 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:52,458 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:21:52,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:52,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:52,459 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:52,459 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:52,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30. [2018-10-02 12:21:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:21:52,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:21:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:52,742 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:21:52,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:21:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:52,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:52,742 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:52,742 INFO L423 AbstractCegarLoop]: === Iteration 268 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:52,742 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash -229898820, now seen corresponding path program 252 times [2018-10-02 12:21:52,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:52,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:52,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:52,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:52,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:52,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:52,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:52,853 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:52,866 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:21:52,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:52,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:52,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:52,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:52,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:52,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:52,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:52,946 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:21:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:53,597 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:53,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:53,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:53,598 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:53,598 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:53,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2018-10-02 12:21:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:53,886 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:53,887 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:53,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:53,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:53,887 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:21:53,887 INFO L423 AbstractCegarLoop]: === Iteration 269 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:53,887 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash -229896898, now seen corresponding path program 253 times [2018-10-02 12:21:53,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:53,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:53,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:53,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:53,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:53,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:53,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:53,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:53,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:54,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:54,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:54,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:54,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:54,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:54,044 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:54,697 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:21:54,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:54,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:54,698 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:54,698 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:54,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:21:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:54,994 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:21:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:54,994 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:54,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:54,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:54,994 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:21:54,994 INFO L423 AbstractCegarLoop]: === Iteration 270 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:54,994 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash -228051778, now seen corresponding path program 254 times [2018-10-02 12:21:54,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:54,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:54,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:54,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:54,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:55,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:55,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:55,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:55,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:55,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:55,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:55,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:55,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:55,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:55,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:55,139 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:21:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:55,769 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:21:55,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:55,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:55,770 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:55,770 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:55,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:21:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-02 12:21:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:56,074 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:56,075 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:56,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:56,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:56,075 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:21:56,075 INFO L423 AbstractCegarLoop]: === Iteration 271 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:56,075 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash -228049856, now seen corresponding path program 255 times [2018-10-02 12:21:56,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:56,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:56,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:56,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:56,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:56,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:56,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:56,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:56,163 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:21:56,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:56,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:56,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:56,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:56,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:56,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:56,230 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:56,842 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:21:56,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:56,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:56,843 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:56,843 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:56,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:21:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:21:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:21:57,115 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19 [2018-10-02 12:21:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:57,115 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:21:57,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:21:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:57,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:57,116 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:21:57,116 INFO L423 AbstractCegarLoop]: === Iteration 272 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:57,116 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:57,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1983899974, now seen corresponding path program 256 times [2018-10-02 12:21:57,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:57,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:57,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:57,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:57,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:57,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:57,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:57,230 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:57,236 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:57,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:57,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:57,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:57,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:57,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:57,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:57,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:57,282 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states. [2018-10-02 12:21:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:58,042 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:58,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:58,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:58,043 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:58,043 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:58,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:21:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:21:58,351 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:21:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:58,351 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:21:58,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:21:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:58,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:58,352 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:58,352 INFO L423 AbstractCegarLoop]: === Iteration 273 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:58,352 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:58,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1983898052, now seen corresponding path program 257 times [2018-10-02 12:21:58,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:58,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:58,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:58,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:58,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:58,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:58,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:58,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:58,437 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:21:58,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:58,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:58,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:58,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:21:58,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:21:58,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:21:58,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:58,510 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:21:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:59,319 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:21:59,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:21:59,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:21:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:59,320 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:59,320 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:59,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:21:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:21:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:21:59,624 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:21:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:59,624 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:21:59,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:21:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:21:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:21:59,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:59,624 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:21:59,624 INFO L423 AbstractCegarLoop]: === Iteration 274 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:59,624 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:59,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1982052932, now seen corresponding path program 258 times [2018-10-02 12:21:59,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:59,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:59,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:59,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:59,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:00,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:00,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:00,909 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:00,951 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:00,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:00,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:01,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:01,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:01,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:01,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:01,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:01,001 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:01,761 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:22:01,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:01,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:01,762 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:22:01,762 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:22:01,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:22:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:22:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:22:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:02,061 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:02,061 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:02,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:02,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:02,061 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:02,062 INFO L423 AbstractCegarLoop]: === Iteration 275 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:02,062 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1982051010, now seen corresponding path program 259 times [2018-10-02 12:22:02,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:02,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:02,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:02,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:02,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:02,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:02,146 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:02,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:02,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:02,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:02,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:02,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:02,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:02,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:02,225 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:02,978 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:22:02,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:02,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:02,979 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:22:02,979 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:22:02,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:22:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2018-10-02 12:22:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:03,273 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:03,273 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:03,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:03,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:03,273 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:03,273 INFO L423 AbstractCegarLoop]: === Iteration 276 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:03,274 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash -208892612, now seen corresponding path program 260 times [2018-10-02 12:22:03,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:03,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:03,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:03,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:03,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:03,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:03,373 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:03,373 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:03,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:03,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:03,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:03,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:03,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:03,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:03,440 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:04,242 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:22:04,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:04,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:04,243 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:22:04,243 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:22:04,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:22:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:22:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:04,565 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:04,565 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:04,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:04,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:04,566 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:04,566 INFO L423 AbstractCegarLoop]: === Iteration 277 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:04,566 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash -208890690, now seen corresponding path program 261 times [2018-10-02 12:22:04,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:04,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:04,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:04,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:04,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:04,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:04,652 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:04,663 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:04,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:04,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:04,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:04,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:04,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:04,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:04,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:04,727 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:05,539 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:22:05,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:05,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:05,540 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:22:05,540 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:22:05,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:22:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:22:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:05,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:05,844 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:05,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:05,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:05,845 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:05,845 INFO L423 AbstractCegarLoop]: === Iteration 278 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:05,845 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash -207045570, now seen corresponding path program 262 times [2018-10-02 12:22:05,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:05,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:05,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:05,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:05,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:05,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:05,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:05,920 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:05,927 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:05,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:05,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:05,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:05,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:05,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:05,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:05,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:05,985 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:06,752 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:22:06,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:06,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:06,753 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:22:06,753 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:22:06,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:22:07,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:22:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:07,063 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:07,063 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:07,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:07,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:07,064 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:07,064 INFO L423 AbstractCegarLoop]: === Iteration 279 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:07,064 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:07,064 INFO L82 PathProgramCache]: Analyzing trace with hash -207043648, now seen corresponding path program 263 times [2018-10-02 12:22:07,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:07,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:07,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:07,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:07,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:07,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:07,153 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:07,162 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:07,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:07,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:07,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:07,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:07,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:07,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:07,230 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:07,979 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:22:07,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:07,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:07,980 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:22:07,980 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:22:07,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:22:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2018-10-02 12:22:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:22:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:22:08,232 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19 [2018-10-02 12:22:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:08,232 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:22:08,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:22:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:08,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:08,232 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:08,233 INFO L423 AbstractCegarLoop]: === Iteration 280 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:08,233 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1303841604, now seen corresponding path program 264 times [2018-10-02 12:22:08,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:08,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:08,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:08,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:08,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:08,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:08,325 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:08,333 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:08,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:08,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:08,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:08,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:08,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:08,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:08,399 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states. [2018-10-02 12:22:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:09,130 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:22:09,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:09,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:09,131 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:22:09,131 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:22:09,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:22:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:22:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:09,420 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:09,420 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:09,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:09,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:09,421 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:09,421 INFO L423 AbstractCegarLoop]: === Iteration 281 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:09,421 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1303839682, now seen corresponding path program 265 times [2018-10-02 12:22:09,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:09,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:09,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:09,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:09,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:09,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:09,725 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:09,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:09,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:09,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:09,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:09,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:09,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:09,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:09,785 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:10,506 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:10,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:10,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:10,506 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:10,506 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:10,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:22:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:22:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:10,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:10,813 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:10,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:10,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:10,814 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:10,814 INFO L423 AbstractCegarLoop]: === Iteration 282 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:10,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1301994562, now seen corresponding path program 266 times [2018-10-02 12:22:10,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:10,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:10,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:10,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:10,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:10,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:10,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:10,889 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:10,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:10,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:10,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:10,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:10,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:10,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:10,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:10,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:10,953 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:11,702 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:22:11,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:11,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:11,703 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:22:11,703 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:22:11,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:22:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:22:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:12,027 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:12,028 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:12,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:12,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:12,028 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:12,028 INFO L423 AbstractCegarLoop]: === Iteration 283 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:12,028 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1301992640, now seen corresponding path program 267 times [2018-10-02 12:22:12,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:12,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:12,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:12,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:12,098 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:12,110 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:12,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:12,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:12,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:12,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:12,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:12,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:12,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:12,253 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:12,981 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:12,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:12,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:12,982 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:12,982 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:12,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30. [2018-10-02 12:22:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:13,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:13,253 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:13,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:13,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:13,253 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:13,254 INFO L423 AbstractCegarLoop]: === Iteration 284 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:13,254 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash 471165758, now seen corresponding path program 268 times [2018-10-02 12:22:13,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:13,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:13,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:13,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:13,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:13,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:13,401 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:13,408 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:13,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:13,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:13,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:13,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:13,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:13,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:13,457 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:14,157 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:14,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:14,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:14,158 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:14,158 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:14,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:22:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2018-10-02 12:22:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:14,471 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:14,471 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:14,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:14,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:14,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:14,471 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:14,472 INFO L423 AbstractCegarLoop]: === Iteration 285 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:14,472 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:14,472 INFO L82 PathProgramCache]: Analyzing trace with hash 471167680, now seen corresponding path program 269 times [2018-10-02 12:22:14,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:14,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:14,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:14,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:14,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:14,551 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:14,562 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:14,571 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:14,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:14,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:14,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:14,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:14,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:14,639 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:15,330 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:15,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:15,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:15,331 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:15,331 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:15,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:22:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:15,647 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:15,647 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:15,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:15,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:15,648 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:15,648 INFO L423 AbstractCegarLoop]: === Iteration 286 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:15,648 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:15,648 INFO L82 PathProgramCache]: Analyzing trace with hash 473012800, now seen corresponding path program 270 times [2018-10-02 12:22:15,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:15,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:15,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:15,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:15,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:15,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:15,724 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:15,733 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:15,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:15,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:15,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:15,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:15,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:15,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:15,793 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:16,468 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:22:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:16,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:16,469 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:22:16,469 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:22:16,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:22:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-02 12:22:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:16,790 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:16,790 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:16,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:16,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:16,790 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:16,791 INFO L423 AbstractCegarLoop]: === Iteration 287 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:16,791 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:16,791 INFO L82 PathProgramCache]: Analyzing trace with hash 473014722, now seen corresponding path program 271 times [2018-10-02 12:22:16,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:16,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:16,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:16,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:16,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:16,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:16,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:16,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:16,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:16,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:16,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:16,944 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:17,575 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:17,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:17,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:17,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:17,575 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:17,576 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:17,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 24. [2018-10-02 12:22:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:22:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-10-02 12:22:17,777 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 19 [2018-10-02 12:22:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:17,777 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-10-02 12:22:17,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-02 12:22:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:17,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:17,777 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:22:17,777 INFO L423 AbstractCegarLoop]: === Iteration 288 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:17,777 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:17,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1023196730, now seen corresponding path program 272 times [2018-10-02 12:22:17,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:17,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:17,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:17,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:17,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:17,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:17,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:17,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:17,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:17,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:17,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:17,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:17,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:17,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:17,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:17,925 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 11 states. [2018-10-02 12:22:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:18,622 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:18,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:18,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:18,623 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:18,623 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:18,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2018-10-02 12:22:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:18,968 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:18,969 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:18,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:18,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:18,969 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:18,969 INFO L423 AbstractCegarLoop]: === Iteration 289 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:18,969 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1023198652, now seen corresponding path program 273 times [2018-10-02 12:22:18,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:18,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:18,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:18,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:18,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:19,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:19,049 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:19,059 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:19,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:19,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:19,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:19,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:19,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:19,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:19,128 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:19,837 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:19,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:19,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:19,838 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:19,838 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:19,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:22:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:20,156 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:20,156 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:20,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:20,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:20,157 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:20,157 INFO L423 AbstractCegarLoop]: === Iteration 290 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:20,157 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1025043772, now seen corresponding path program 274 times [2018-10-02 12:22:20,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:20,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:20,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:20,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:20,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:20,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:20,799 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:20,804 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:20,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:20,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:20,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:20,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:20,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:20,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:20,906 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:21,643 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:21,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:21,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:21,644 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:21,644 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:21,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:22:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2018-10-02 12:22:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:21,954 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:21,954 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:21,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:21,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:21,954 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:21,954 INFO L423 AbstractCegarLoop]: === Iteration 291 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:21,954 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:21,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1025045694, now seen corresponding path program 275 times [2018-10-02 12:22:21,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:21,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:21,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:21,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:21,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:22,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:22,032 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:22,040 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:22,049 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:22,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:22,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:22,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:22,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:22,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:22,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:22,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:22,120 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:22,832 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:22,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:22,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:22,833 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:22,833 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:22,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2018-10-02 12:22:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:23,134 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:23,134 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:23,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:23,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:23,134 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:23,134 INFO L423 AbstractCegarLoop]: === Iteration 292 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:23,135 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:23,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1496763204, now seen corresponding path program 276 times [2018-10-02 12:22:23,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:23,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:23,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:23,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:23,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:23,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:23,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:23,226 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:23,240 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:23,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:23,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:23,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:23,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:23,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:23,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:23,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:23,320 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:24,023 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:22:24,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:24,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:24,023 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:22:24,023 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:22:24,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:22:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-02 12:22:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:24,333 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:24,333 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:24,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:24,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:24,333 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:24,334 INFO L423 AbstractCegarLoop]: === Iteration 293 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:24,334 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1496761282, now seen corresponding path program 277 times [2018-10-02 12:22:24,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:24,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:24,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:24,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:24,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:24,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:24,407 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:24,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:24,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:24,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:24,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:24,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:24,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:24,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:24,488 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:25,171 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:22:25,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:25,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:25,172 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:22:25,172 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:22:25,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:22:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2018-10-02 12:22:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:25,561 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:25,561 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:25,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:25,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:25,562 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:25,562 INFO L423 AbstractCegarLoop]: === Iteration 294 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:25,562 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:25,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1494916162, now seen corresponding path program 278 times [2018-10-02 12:22:25,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:25,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:25,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:25,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:25,639 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:25,647 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:25,652 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:25,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:25,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:25,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:25,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:25,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:25,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:25,709 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:26,373 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:26,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:26,374 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:26,374 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:26,374 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:26,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-10-02 12:22:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:26,718 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:26,719 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:26,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:26,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:26,719 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:26,719 INFO L423 AbstractCegarLoop]: === Iteration 295 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:26,719 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1494914240, now seen corresponding path program 279 times [2018-10-02 12:22:26,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:26,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:26,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:26,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:26,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:26,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:26,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:26,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:26,798 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:26,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:26,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:26,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:26,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:26,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:26,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:26,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:26,865 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:27,497 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:22:27,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:27,497 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:27,497 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:22:27,497 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:22:27,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:22:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2018-10-02 12:22:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:22:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:22:27,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19 [2018-10-02 12:22:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:27,789 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:22:27,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:22:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:27,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:27,789 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:27,790 INFO L423 AbstractCegarLoop]: === Iteration 296 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:27,790 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1703255100, now seen corresponding path program 280 times [2018-10-02 12:22:27,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:27,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:27,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:27,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:27,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:27,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:27,875 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:27,881 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:27,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:27,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:27,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:27,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:27,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:27,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:27,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:27,978 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states. [2018-10-02 12:22:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:28,705 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:28,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:28,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:28,706 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:28,706 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:28,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2018-10-02 12:22:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:29,053 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:29,053 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:29,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:29,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:29,054 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:29,054 INFO L423 AbstractCegarLoop]: === Iteration 297 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:29,054 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1703257022, now seen corresponding path program 281 times [2018-10-02 12:22:29,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:29,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:29,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:29,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:29,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:29,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:29,140 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:29,148 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:29,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:29,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:29,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:29,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:29,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:29,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:29,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:29,203 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:29,937 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:29,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:29,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:29,938 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:29,938 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:29,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:30,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:22:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:30,243 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:30,243 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:30,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:30,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:30,244 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:30,244 INFO L423 AbstractCegarLoop]: === Iteration 298 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:30,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1705102142, now seen corresponding path program 282 times [2018-10-02 12:22:30,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:30,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:30,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:30,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:30,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:30,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:30,316 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:30,325 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:30,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:30,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:30,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:30,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:30,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:30,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:30,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:30,611 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:31,922 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:22:31,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:31,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:31,922 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:22:31,922 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:22:31,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:22:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:22:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2018-10-02 12:22:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:32,252 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:32,252 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:32,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:32,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:32,253 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:32,253 INFO L423 AbstractCegarLoop]: === Iteration 299 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:32,253 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:32,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1705104064, now seen corresponding path program 283 times [2018-10-02 12:22:32,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:32,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:32,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:32,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:32,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:32,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:32,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:32,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:32,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:32,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:32,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:32,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:32,398 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:33,102 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:22:33,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:33,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:33,103 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:22:33,103 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:22:33,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:22:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2018-10-02 12:22:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:33,462 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:33,462 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:33,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:33,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:33,462 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:33,462 INFO L423 AbstractCegarLoop]: === Iteration 300 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:33,463 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:33,463 INFO L82 PathProgramCache]: Analyzing trace with hash -816704834, now seen corresponding path program 284 times [2018-10-02 12:22:33,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:33,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:33,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:33,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:33,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:33,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:33,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:33,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:33,627 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:33,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:33,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:33,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:33,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:33,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:33,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:33,691 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:33,691 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:34,400 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:22:34,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:34,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:34,401 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:22:34,401 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:22:34,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:22:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:22:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-02 12:22:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:34,727 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:34,727 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:34,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:34,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:34,728 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:34,728 INFO L423 AbstractCegarLoop]: === Iteration 301 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:34,728 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -816702912, now seen corresponding path program 285 times [2018-10-02 12:22:34,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:34,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:34,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:34,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:34,788 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:34,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:34,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:34,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:34,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:34,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:34,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:34,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:34,868 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:34,868 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:35,554 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:22:35,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:35,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:35,555 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:22:35,555 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:22:35,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:22:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2018-10-02 12:22:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:35,898 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:35,898 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:35,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:35,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:35,898 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:35,898 INFO L423 AbstractCegarLoop]: === Iteration 302 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:35,899 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash -814857792, now seen corresponding path program 286 times [2018-10-02 12:22:35,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:35,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:35,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:35,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:35,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:35,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:35,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:35,990 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:35,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:35,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:35,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:36,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:36,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:36,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:36,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:36,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:36,049 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:36,733 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:36,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:36,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:36,734 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:36,734 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:36,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-10-02 12:22:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:37,066 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:37,066 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:37,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:37,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:37,066 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:37,067 INFO L423 AbstractCegarLoop]: === Iteration 303 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:37,067 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:37,067 INFO L82 PathProgramCache]: Analyzing trace with hash -814855870, now seen corresponding path program 287 times [2018-10-02 12:22:37,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:37,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:37,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:37,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:37,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:37,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:37,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:37,153 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:37,163 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:37,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:37,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:37,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:37,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:37,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:37,233 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:37,233 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:37,882 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:22:37,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:37,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:37,883 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:22:37,883 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:22:37,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:22:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26. [2018-10-02 12:22:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:22:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:22:38,126 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19 [2018-10-02 12:22:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:38,126 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:22:38,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:22:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:38,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:38,127 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:38,127 INFO L423 AbstractCegarLoop]: === Iteration 304 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:38,127 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:38,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1724261308, now seen corresponding path program 288 times [2018-10-02 12:22:38,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:38,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:38,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:38,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:38,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:38,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:38,197 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:38,206 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:38,216 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:38,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:38,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:38,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:38,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:38,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:38,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:38,321 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states. [2018-10-02 12:22:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:38,998 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:38,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:38,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:38,998 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:38,999 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:38,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-10-02 12:22:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:39,356 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:39,356 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:39,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:39,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:39,356 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:39,356 INFO L423 AbstractCegarLoop]: === Iteration 305 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:39,356 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1724263230, now seen corresponding path program 289 times [2018-10-02 12:22:39,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:39,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:39,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:39,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:39,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:39,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:39,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:39,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:39,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:39,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:39,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:39,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:39,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:39,501 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:39,501 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:40,182 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:40,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:40,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:40,183 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:40,183 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:40,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:22:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:40,519 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:40,519 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:40,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:40,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:40,519 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:40,519 INFO L423 AbstractCegarLoop]: === Iteration 306 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:40,519 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1726108350, now seen corresponding path program 290 times [2018-10-02 12:22:40,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:40,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:40,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:40,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:40,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:40,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:40,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:40,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:40,610 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:40,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:40,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:40,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:40,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:40,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:40,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:40,680 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:41,301 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:22:41,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:41,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:41,302 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:22:41,302 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:22:41,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:22:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2018-10-02 12:22:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:41,642 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:41,642 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:41,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:41,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:41,642 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:41,642 INFO L423 AbstractCegarLoop]: === Iteration 307 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:41,642 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1726110272, now seen corresponding path program 291 times [2018-10-02 12:22:41,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:41,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:41,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:41,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:41,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:41,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:41,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:41,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:41,725 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:41,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:41,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:41,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:41,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:41,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:41,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:41,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:41,786 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:42,411 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:22:42,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:42,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:42,412 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:22:42,412 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:22:42,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:22:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2018-10-02 12:22:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:42,718 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:42,718 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:42,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:42,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:42,719 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:42,719 INFO L423 AbstractCegarLoop]: === Iteration 308 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:42,719 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:42,719 INFO L82 PathProgramCache]: Analyzing trace with hash -795698626, now seen corresponding path program 292 times [2018-10-02 12:22:42,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:42,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:42,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:42,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:42,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:42,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:42,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:42,808 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:42,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:42,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:42,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:42,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:42,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:42,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:42,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:42,877 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:43,560 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:43,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:43,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:43,560 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:43,560 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:43,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-10-02 12:22:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:43,923 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:43,923 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:43,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:43,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:43,923 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:43,923 INFO L423 AbstractCegarLoop]: === Iteration 309 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:43,923 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:43,924 INFO L82 PathProgramCache]: Analyzing trace with hash -795696704, now seen corresponding path program 293 times [2018-10-02 12:22:43,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:43,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:43,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:43,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:43,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:44,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:44,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:44,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:44,036 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:44,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:44,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:44,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:44,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:44,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:44,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:44,152 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:44,830 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:22:44,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:44,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:44,831 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:22:44,831 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:22:44,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:22:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2018-10-02 12:22:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:45,177 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:45,177 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:45,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:45,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:45,177 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:45,177 INFO L423 AbstractCegarLoop]: === Iteration 310 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:45,177 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash -793851584, now seen corresponding path program 294 times [2018-10-02 12:22:45,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:45,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:45,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:45,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:45,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:45,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:45,247 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:45,260 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:45,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:45,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:45,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:45,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:45,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:45,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:45,318 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:45,968 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2018-10-02 12:22:45,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:45,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:45,969 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:22:45,969 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:22:45,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:22:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2018-10-02 12:22:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:46,293 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:46,294 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:46,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:46,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:46,294 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:46,294 INFO L423 AbstractCegarLoop]: === Iteration 311 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:46,294 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash -793849662, now seen corresponding path program 295 times [2018-10-02 12:22:46,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:46,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:46,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:46,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:46,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:46,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:46,576 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:46,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:46,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:46,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:46,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:46,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:46,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:46,637 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:47,231 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:22:47,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:47,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:47,232 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:22:47,232 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:22:47,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:22:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2018-10-02 12:22:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:22:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:22:47,506 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19 [2018-10-02 12:22:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:47,506 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:22:47,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:22:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:47,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:47,507 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:47,507 INFO L423 AbstractCegarLoop]: === Iteration 312 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:47,507 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1890647618, now seen corresponding path program 296 times [2018-10-02 12:22:47,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:47,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:47,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:47,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:47,586 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:47,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:47,601 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:47,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:47,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:47,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:47,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:47,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:47,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:47,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:47,657 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states. [2018-10-02 12:22:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:48,269 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:22:48,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:48,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:48,270 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:22:48,270 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:22:48,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:22:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2018-10-02 12:22:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:48,633 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:48,633 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:48,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:48,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:48,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:48,633 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:48,633 INFO L423 AbstractCegarLoop]: === Iteration 313 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:48,634 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:48,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1890645696, now seen corresponding path program 297 times [2018-10-02 12:22:48,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:48,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:48,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:48,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:48,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:48,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:48,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:48,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:48,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:48,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:48,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:48,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:48,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:48,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:48,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:48,904 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:48,904 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:49,531 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:22:49,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:49,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:49,532 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:22:49,532 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:22:49,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:22:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2018-10-02 12:22:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:49,854 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:49,855 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:49,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:49,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:49,855 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:49,855 INFO L423 AbstractCegarLoop]: === Iteration 314 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:49,855 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:49,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1888800576, now seen corresponding path program 298 times [2018-10-02 12:22:49,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:49,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:49,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:49,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:49,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:49,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:49,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:49,943 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:49,949 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:49,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:49,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:50,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:50,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:50,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:50,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:50,018 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:50,695 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2018-10-02 12:22:50,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:50,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:50,696 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:22:50,696 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:22:50,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:22:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2018-10-02 12:22:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:51,060 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:51,060 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:51,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:51,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:51,061 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:51,061 INFO L423 AbstractCegarLoop]: === Iteration 315 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:51,061 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:51,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1888798654, now seen corresponding path program 299 times [2018-10-02 12:22:51,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:51,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:51,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:51,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:51,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:51,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:51,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:51,147 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:51,157 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:51,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:51,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:51,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:51,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:51,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:51,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:51,226 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:51,835 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2018-10-02 12:22:51,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:51,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:51,836 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:22:51,836 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:22:51,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:22:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-10-02 12:22:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:22:52,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:22:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:52,173 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:22:52,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:22:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:52,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:52,173 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:22:52,173 INFO L423 AbstractCegarLoop]: === Iteration 316 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:52,173 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash -115640256, now seen corresponding path program 300 times [2018-10-02 12:22:52,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:52,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:52,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:52,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:52,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:52,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:52,252 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:52,261 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:52,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:52,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:52,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:52,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:52,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:52,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:52,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:52,329 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:22:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:52,869 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:22:52,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:52,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:52,870 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:22:52,870 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:22:52,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:22:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-10-02 12:22:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:53,237 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:53,237 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:53,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:53,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:53,238 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:53,238 INFO L423 AbstractCegarLoop]: === Iteration 317 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:53,238 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash -115638334, now seen corresponding path program 301 times [2018-10-02 12:22:53,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:53,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:53,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:53,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:53,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:53,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:53,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:53,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:53,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:53,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:53,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:53,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:53,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:53,393 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:53,988 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2018-10-02 12:22:53,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:53,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:53,989 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:22:53,989 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:22:53,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:22:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-10-02 12:22:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:54,344 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:54,344 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:54,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:54,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:54,345 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:22:54,345 INFO L423 AbstractCegarLoop]: === Iteration 318 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:54,345 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash -113793214, now seen corresponding path program 302 times [2018-10-02 12:22:54,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:54,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:54,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:54,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:54,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:54,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:54,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:54,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:54,436 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:54,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:54,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:54,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:54,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:54,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:54,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:54,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:54,491 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:22:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:55,066 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2018-10-02 12:22:55,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:55,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:55,067 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:22:55,067 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:22:55,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:22:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-10-02 12:22:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:55,400 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:55,400 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:55,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:55,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:55,400 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:55,401 INFO L423 AbstractCegarLoop]: === Iteration 319 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:55,401 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -113791292, now seen corresponding path program 303 times [2018-10-02 12:22:55,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:55,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:55,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:55,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:55,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:55,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:55,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:55,491 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:55,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:55,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:55,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:55,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:55,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:55,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:55,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:55,561 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:56,074 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2018-10-02 12:22:56,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:56,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:56,075 INFO L225 Difference]: With dead ends: 38 [2018-10-02 12:22:56,075 INFO L226 Difference]: Without dead ends: 36 [2018-10-02 12:22:56,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-02 12:22:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2018-10-02 12:22:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:22:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2018-10-02 12:22:56,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 19 [2018-10-02 12:22:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:56,297 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-10-02 12:22:56,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2018-10-02 12:22:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:56,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:56,297 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1] [2018-10-02 12:22:56,297 INFO L423 AbstractCegarLoop]: === Iteration 320 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:56,298 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 330139066, now seen corresponding path program 304 times [2018-10-02 12:22:56,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:56,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:56,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:56,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:56,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:56,384 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:56,414 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:56,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:56,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:56,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:56,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:56,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:56,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:56,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:56,550 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 11 states. [2018-10-02 12:22:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:57,439 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:22:57,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:57,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:57,440 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:22:57,440 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:22:57,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:22:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:22:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:22:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:22:57,812 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:22:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:57,813 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:22:57,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:22:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:57,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:57,813 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:57,813 INFO L423 AbstractCegarLoop]: === Iteration 321 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:57,813 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:57,813 INFO L82 PathProgramCache]: Analyzing trace with hash 330140988, now seen corresponding path program 305 times [2018-10-02 12:22:57,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:57,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:57,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:57,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:57,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:57,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:57,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:57,884 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:57,893 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:22:57,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:57,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:57,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:57,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:57,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:57,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:57,963 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:22:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:58,878 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:22:58,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:58,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:22:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:58,879 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:22:58,879 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:22:58,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:22:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:22:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:22:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:22:59,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:22:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:59,249 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:22:59,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:22:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:59,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:59,249 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:22:59,249 INFO L423 AbstractCegarLoop]: === Iteration 322 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:59,249 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:59,249 INFO L82 PathProgramCache]: Analyzing trace with hash 331986108, now seen corresponding path program 306 times [2018-10-02 12:22:59,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:59,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:59,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:59,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:59,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:59,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:59,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:59,374 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:59,384 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:22:59,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:59,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:59,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:59,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:22:59,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:59,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:59,434 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:23:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:00,335 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:23:00,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:00,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:00,336 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:23:00,336 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:23:00,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:23:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:23:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:00,708 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:00,708 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:00,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:00,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:00,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:00,709 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:00,709 INFO L423 AbstractCegarLoop]: === Iteration 323 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:00,709 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:00,709 INFO L82 PathProgramCache]: Analyzing trace with hash 331988030, now seen corresponding path program 307 times [2018-10-02 12:23:00,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:00,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:00,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:00,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:00,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:00,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:00,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:00,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:00,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:00,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:00,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:00,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:00,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:00,851 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:01,717 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:23:01,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:01,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:01,718 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:23:01,718 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:23:01,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:23:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:23:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2018-10-02 12:23:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:23:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:23:02,096 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:23:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:02,096 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:23:02,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:23:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:02,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:02,096 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:23:02,096 INFO L423 AbstractCegarLoop]: === Iteration 324 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:02,097 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:02,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2105146428, now seen corresponding path program 308 times [2018-10-02 12:23:02,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:02,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:02,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:02,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:02,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:02,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:02,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:02,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:02,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:02,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:02,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:02,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:02,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:02,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:02,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:02,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:02,242 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:23:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:03,165 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:23:03,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:03,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:03,165 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:23:03,166 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:23:03,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:23:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:23:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:03,621 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:03,621 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:03,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:03,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:03,621 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:03,622 INFO L423 AbstractCegarLoop]: === Iteration 325 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:03,622 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:03,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2105148350, now seen corresponding path program 309 times [2018-10-02 12:23:03,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:03,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:03,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:03,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:03,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:03,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:03,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:03,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:03,708 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:23:03,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:03,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:03,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:03,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:03,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:03,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:03,762 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:04,696 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:23:04,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:04,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:04,697 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:23:04,697 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:23:04,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:23:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:23:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:23:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:23:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:23:05,065 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:23:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:05,065 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:23:05,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:23:05,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:05,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:05,066 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:05,066 INFO L423 AbstractCegarLoop]: === Iteration 326 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:05,066 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2106993470, now seen corresponding path program 310 times [2018-10-02 12:23:05,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:05,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:05,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:05,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:05,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:05,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:05,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:05,144 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:05,150 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:05,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:05,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:05,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:05,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:05,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:05,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:05,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:05,205 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:23:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:06,077 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2018-10-02 12:23:06,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:06,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:06,078 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:23:06,078 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:23:06,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:23:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:23:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2018-10-02 12:23:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:06,446 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:06,446 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:06,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:06,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:06,447 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:23:06,447 INFO L423 AbstractCegarLoop]: === Iteration 327 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:06,447 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:06,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2106995392, now seen corresponding path program 311 times [2018-10-02 12:23:06,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:06,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:06,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:06,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:06,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:06,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:06,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:06,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:06,540 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:23:06,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:06,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:06,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:06,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:06,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:06,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:06,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:06,838 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:07,718 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:23:07,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:07,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:07,719 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:23:07,719 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:23:07,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:23:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:23:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2018-10-02 12:23:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:23:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-10-02 12:23:08,039 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19 [2018-10-02 12:23:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:08,039 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2018-10-02 12:23:08,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2018-10-02 12:23:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:08,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:08,039 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:23:08,039 INFO L423 AbstractCegarLoop]: === Iteration 328 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:08,040 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:08,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1010197436, now seen corresponding path program 312 times [2018-10-02 12:23:08,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:08,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:08,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:08,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:08,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:08,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:08,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:08,108 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:23:08,117 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:23:08,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:08,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:08,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:08,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:08,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:08,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:08,188 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states. [2018-10-02 12:23:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:09,052 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:23:09,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:09,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:09,053 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:23:09,053 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:23:09,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:23:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:23:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:09,437 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:09,437 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:09,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:09,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:09,437 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:09,437 INFO L423 AbstractCegarLoop]: === Iteration 329 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:09,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:09,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1010199358, now seen corresponding path program 313 times [2018-10-02 12:23:09,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:09,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:09,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:09,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:09,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:09,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:09,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:09,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:09,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:09,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:09,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:09,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:09,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:09,630 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:10,469 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:23:10,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:10,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:10,470 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:23:10,470 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:23:10,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:23:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2018-10-02 12:23:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:23:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:23:10,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:23:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:10,837 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:23:10,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:23:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:10,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:10,838 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:10,838 INFO L423 AbstractCegarLoop]: === Iteration 330 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:10,838 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:10,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1012044478, now seen corresponding path program 314 times [2018-10-02 12:23:10,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:10,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:10,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:10,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:10,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:10,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:10,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:10,916 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:10,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:10,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:10,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:10,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:10,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:10,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:10,983 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:23:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:11,853 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2018-10-02 12:23:11,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:11,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:11,854 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:23:11,854 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:23:11,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:23:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2018-10-02 12:23:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:12,228 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:12,228 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:12,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:12,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:12,228 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:23:12,229 INFO L423 AbstractCegarLoop]: === Iteration 331 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:12,229 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:12,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1012046400, now seen corresponding path program 315 times [2018-10-02 12:23:12,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:12,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:12,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:12,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:12,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:12,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:12,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:12,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:12,310 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:23:12,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:12,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:12,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:12,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:12,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:12,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:12,367 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:13,217 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2018-10-02 12:23:13,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:13,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:13,218 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:23:13,218 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:23:13,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:23:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:23:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30. [2018-10-02 12:23:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:23:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2018-10-02 12:23:13,599 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19 [2018-10-02 12:23:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:13,599 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2018-10-02 12:23:13,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2018-10-02 12:23:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:13,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:13,599 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:13,600 INFO L423 AbstractCegarLoop]: === Iteration 332 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:13,600 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1509762498, now seen corresponding path program 316 times [2018-10-02 12:23:13,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:13,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:13,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:13,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:13,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:13,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:13,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:13,705 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:13,710 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:13,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:13,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:13,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:13,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:13,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:13,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:13,765 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:13,765 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states. [2018-10-02 12:23:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:14,565 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:23:14,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:14,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:14,565 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:23:14,565 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:23:14,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:23:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2018-10-02 12:23:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:14,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:14,942 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:14,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:14,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:14,942 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:23:14,942 INFO L423 AbstractCegarLoop]: === Iteration 333 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:14,942 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1509760576, now seen corresponding path program 317 times [2018-10-02 12:23:14,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:14,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:14,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:14,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:14,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:15,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:15,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:15,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:15,038 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-02 12:23:15,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:15,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:15,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:15,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:15,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:15,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:15,106 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:15,923 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2018-10-02 12:23:15,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:15,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:15,924 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:23:15,924 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:23:15,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:23:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2018-10-02 12:23:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:23:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2018-10-02 12:23:16,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19 [2018-10-02 12:23:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:16,293 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-10-02 12:23:16,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-10-02 12:23:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:16,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:16,294 INFO L375 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1] [2018-10-02 12:23:16,294 INFO L423 AbstractCegarLoop]: === Iteration 334 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:16,294 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1507915456, now seen corresponding path program 318 times [2018-10-02 12:23:16,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:16,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:16,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:16,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:16,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:16,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:16,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:16,370 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:23:16,381 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:23:16,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:16,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:16,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:16,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:16,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:16,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:16,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:16,450 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states. [2018-10-02 12:23:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:17,238 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2018-10-02 12:23:17,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:17,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:17,239 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:23:17,239 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:23:17,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:23:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-02 12:23:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:17,657 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:17,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:17,657 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:17,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:17,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:17,657 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:17,657 INFO L423 AbstractCegarLoop]: === Iteration 335 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:17,657 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1507913534, now seen corresponding path program 319 times [2018-10-02 12:23:17,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:17,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:17,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:17,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:17,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:17,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:17,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:17,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:17,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:17,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:17,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:17,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:17,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:17,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:17,822 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:18,560 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2018-10-02 12:23:18,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:18,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:18,561 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:23:18,561 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:23:18,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:23:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2018-10-02 12:23:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:23:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-02 12:23:18,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19 [2018-10-02 12:23:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:18,882 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-02 12:23:18,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2018-10-02 12:23:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:18,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:18,883 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1] [2018-10-02 12:23:18,883 INFO L423 AbstractCegarLoop]: === Iteration 336 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:18,883 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:18,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1031203644, now seen corresponding path program 320 times [2018-10-02 12:23:18,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:18,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:18,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:18,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:18,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:18,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:18,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:18,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:18,985 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:18,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:18,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:19,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:19,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:19,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:19,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:19,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:19,040 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states. [2018-10-02 12:23:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:19,959 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:23:19,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:19,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:19,960 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:23:19,960 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:23:19,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:23:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2018-10-02 12:23:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-10-02 12:23:20,355 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19 [2018-10-02 12:23:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:20,356 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-10-02 12:23:20,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:23:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-10-02 12:23:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:23:20,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:20,356 INFO L375 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1] [2018-10-02 12:23:20,356 INFO L423 AbstractCegarLoop]: === Iteration 337 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:20,356 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1031205566, now seen corresponding path program 321 times [2018-10-02 12:23:20,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:20,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:20,439 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:23:20,448 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:20,457 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:23:20,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:20,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:20,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:20,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:23:20,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:23:20,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:23:20,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:20,529 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states. [2018-10-02 12:23:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:21,461 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2018-10-02 12:23:21,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:23:21,462 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-10-02 12:23:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:21,462 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:23:21,462 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:23:21,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:23:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. Received shutdown request... [2018-10-02 12:23:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2018-10-02 12:23:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:23:21,847 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:23:21,852 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:23:21,852 INFO L202 PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:23:21 BoogieIcfgContainer [2018-10-02 12:23:21,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:23:21,853 INFO L168 Benchmark]: Toolchain (without parser) took 254947.14 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -301.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 335.3 MB). Peak memory consumption was 272.7 MB. Max. memory is 7.1 GB. [2018-10-02 12:23:21,855 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:23:21,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:23:21,855 INFO L168 Benchmark]: Boogie Preprocessor took 22.06 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:23:21,856 INFO L168 Benchmark]: RCFGBuilder took 358.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-10-02 12:23:21,856 INFO L168 Benchmark]: TraceAbstraction took 254519.97 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -301.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 314.1 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:23:21,858 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 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.06 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 358.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 254519.97 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -301.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 314.1 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 29). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 254.4s OverallTime, 337 OverallIterations, 8 TraceHistogramMax, 138.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1350 SDtfs, 2533 SDslu, 4509 SDs, 0 SdLazy, 7673 SolverSat, 4231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7928 GetRequests, 5397 SyntacticMatches, 0 SemanticMatches, 2531 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=256, 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: 50.5s AutomataMinimizationTime, 337 MinimizatonAttempts, 4880 StatesRemovedByMinimization, 336 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 50.3s InterpolantComputationTime, 10795 NumberOfCodeBlocks, 10795 NumberOfCodeBlocksAsserted, 1878 NumberOfCheckSat, 10122 ConstructedInterpolants, 0 QuantifiedInterpolants, 452424 SizeOfPredicates, 336 NumberOfNonLiveVariables, 13994 ConjunctsInSsa, 2866 ConjunctsInUnsatCore, 673 InterpolantComputations, 1 PerfectInterpolantSequences, 0/29940 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-sophisticated.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-23-21-866.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-sophisticated.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-23-21-866.csv Completed graceful shutdown