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/20170304-DifficultPathPrograms/count_by_k.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:46:52,921 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:46:52,923 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:46:52,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:46:52,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:46:52,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:46:52,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:46:52,940 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:46:52,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:46:52,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:46:52,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:46:52,944 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:46:52,945 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:46:52,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:46:52,947 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:46:52,947 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:46:52,948 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:46:52,950 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:46:52,952 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:46:52,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:46:52,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:46:52,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:46:52,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:46:52,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 12:46:52,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:46:52,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:46:52,988 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:46:52,989 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:46:52,989 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:46:52,989 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:46:52,989 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:46:52,990 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:46:52,990 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:46:52,990 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:46:52,990 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:46:52,990 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:46:52,991 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:46:52,991 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:46:52,991 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:46:52,991 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:46:52,991 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:46:52,992 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:46:52,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:46:52,992 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:46:52,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:46:52,992 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:46:52,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:46:52,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:46:52,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:46:52,993 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:46:52,993 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:46:52,993 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:46:52,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:46:52,994 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:46:52,994 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:46:53,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:46:53,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:46:53,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:46:53,071 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:46:53,071 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:46:53,072 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_k.i_3.bpl [2018-10-04 12:46:53,072 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_k.i_3.bpl' [2018-10-04 12:46:53,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:46:53,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:46:53,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:46:53,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:46:53,130 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:46:53,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:46:53,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:46:53,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:46:53,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:46:53,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... [2018-10-04 12:46:53,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:46:53,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:46:53,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:46:53,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:46:53,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:46:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:46:53,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:46:53,504 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:46:53,505 INFO L202 PluginConnector]: Adding new model count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:46:53 BoogieIcfgContainer [2018-10-04 12:46:53,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:46:53,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:46:53,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:46:53,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:46:53,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:53" (1/2) ... [2018-10-04 12:46:53,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dca1963 and model type count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:46:53, skipping insertion in model container [2018-10-04 12:46:53,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:46:53" (2/2) ... [2018-10-04 12:46:53,514 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_k.i_3.bpl [2018-10-04 12:46:53,524 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:46:53,532 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:46:53,578 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:46:53,579 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:46:53,579 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:46:53,579 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:46:53,579 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:46:53,582 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:46:53,582 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:46:53,582 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:46:53,583 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:46:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:46:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:46:53,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:53,618 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:46:53,620 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:53,627 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 12:46:53,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:53,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:53,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:53,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:53,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:53,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:46:53,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:46:53,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:46:53,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:46:53,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:53,825 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 12:46:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:53,855 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 12:46:53,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:46:53,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:46:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:53,867 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:46:53,868 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:46:53,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 12:46:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:46:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:46:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:46:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:46:53,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 12:46:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:53,906 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:46:53,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:46:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:46:53,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:46:53,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:53,907 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 12:46:53,908 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:53,908 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 12:46:53,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:53,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:53,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:53,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:53,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:54,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:54,104 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:54,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:54,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:54,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:54,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-10-04 12:46:54,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:46:54,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:46:54,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:54,238 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-10-04 12:46:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:54,298 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-04 12:46:54,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:46:54,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-10-04 12:46:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:54,301 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:46:54,301 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:46:54,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 3 [2018-10-04 12:46:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:46:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:46:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:46:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:46:54,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-04 12:46:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:54,309 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:46:54,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:46:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:46:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:46:54,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:54,311 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 12:46:54,311 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:54,311 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 2 times [2018-10-04 12:46:54,312 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:54,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:54,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:54,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:54,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:54,523 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:54,524 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:54,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:54,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:54,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-10-04 12:46:54,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:46:54,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:46:54,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:54,668 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-10-04 12:46:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:55,019 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-04 12:46:55,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:46:55,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-04 12:46:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:55,021 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:46:55,021 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:46:55,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 6 [2018-10-04 12:46:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:46:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:46:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:46:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:46:55,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-04 12:46:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:55,028 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:46:55,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:46:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:46:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:46:55,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:55,029 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 12:46:55,030 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:55,030 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:55,030 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 3 times [2018-10-04 12:46:55,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:55,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:55,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:55,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:55,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:55,188 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:55,198 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:55,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 12:46:55,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:55,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:55,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:55,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-04 12:46:55,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:46:55,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:46:55,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:55,499 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-10-04 12:46:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:55,667 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-10-04 12:46:55,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:46:55,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-10-04 12:46:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:55,668 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:46:55,668 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:46:55,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 8 [2018-10-04 12:46:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:46:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:46:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:46:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:46:55,675 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-10-04 12:46:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:55,676 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:46:55,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:46:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:46:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:46:55,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:55,677 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 12:46:55,677 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:55,677 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 4 times [2018-10-04 12:46:55,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:55,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:55,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:55,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:55,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:55,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:55,868 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:55,901 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:55,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:55,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:56,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:56,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-10-04 12:46:56,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:46:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:46:56,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:56,474 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2018-10-04 12:46:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:56,848 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-10-04 12:46:56,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:46:56,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-10-04 12:46:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:56,850 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:46:56,850 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:46:56,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime 10 [2018-10-04 12:46:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:46:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:46:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:46:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:46:56,857 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-04 12:46:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:56,858 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:46:56,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:46:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:46:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:46:56,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:56,859 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 12:46:56,859 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:56,860 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 5 times [2018-10-04 12:46:56,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:56,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:56,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:56,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:57,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:57,207 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:57,226 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:46:57,254 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 12:46:57,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:57,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:57,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:57,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-10-04 12:46:57,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:46:57,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:46:57,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:57,395 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 13 states. [2018-10-04 12:46:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:57,705 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-10-04 12:46:57,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:46:57,706 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2018-10-04 12:46:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:57,708 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:46:57,708 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:46:57,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 12 [2018-10-04 12:46:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:46:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:46:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:46:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:46:57,716 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-10-04 12:46:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:57,716 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:46:57,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:46:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:46:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:46:57,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:57,718 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 12:46:57,718 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:57,718 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 6 times [2018-10-04 12:46:57,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:57,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:57,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:57,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:58,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:58,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:58,656 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:46:58,697 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2018-10-04 12:46:58,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:58,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:58,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:58,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-10-04 12:46:58,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:46:58,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:46:58,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:58,879 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 15 states. [2018-10-04 12:46:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:59,467 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-10-04 12:46:59,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:46:59,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2018-10-04 12:46:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:59,473 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:46:59,473 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:46:59,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 14 [2018-10-04 12:46:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:46:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:46:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:46:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:46:59,486 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-10-04 12:46:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:59,486 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:46:59,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:46:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:46:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:46:59,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:59,489 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 12:46:59,489 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:59,490 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 7 times [2018-10-04 12:46:59,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:59,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:59,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:59,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:00,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:00,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:00,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:00,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:00,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:00,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-10-04 12:47:00,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:47:00,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:47:00,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:00,703 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 17 states. [2018-10-04 12:47:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:01,619 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-10-04 12:47:01,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:47:01,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-10-04 12:47:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:01,623 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:47:01,623 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:47:01,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 16 [2018-10-04 12:47:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:47:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:47:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:47:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:47:01,633 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-10-04 12:47:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:01,634 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:47:01,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:47:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:47:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:47:01,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:01,635 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 12:47:01,636 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:01,636 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 8 times [2018-10-04 12:47:01,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:01,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:01,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:01,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:01,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:01,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:02,006 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:02,034 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:02,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:02,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:02,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:02,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-10-04 12:47:02,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:47:02,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:47:02,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:02,532 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 19 states. [2018-10-04 12:47:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:03,205 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-10-04 12:47:03,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:47:03,206 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-10-04 12:47:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:03,207 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:47:03,207 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:47:03,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.5s impTime 18 [2018-10-04 12:47:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:47:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:47:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:47:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:47:03,217 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-10-04 12:47:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:03,217 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:47:03,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:47:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:47:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:47:03,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:03,218 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 12:47:03,218 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:03,219 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:03,219 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 9 times [2018-10-04 12:47:03,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:03,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:03,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:03,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:03,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:03,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:03,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:03,648 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 12:47:03,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:03,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:03,849 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 18 [2018-10-04 12:47:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:03,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:03,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-10-04 12:47:03,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:47:03,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:47:03,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:03,879 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 21 states. [2018-10-04 12:47:04,641 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 34 new depth: 7 [2018-10-04 12:47:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:04,694 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-10-04 12:47:04,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:47:04,696 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2018-10-04 12:47:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:04,697 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:47:04,697 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:47:04,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 8 [2018-10-04 12:47:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:47:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:47:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:47:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:47:04,706 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-10-04 12:47:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:04,706 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:47:04,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:47:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:47:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:47:04,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:04,709 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 12:47:04,709 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:04,709 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 10 times [2018-10-04 12:47:04,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:04,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:04,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:04,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:04,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:05,070 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:47:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:05,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:05,102 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:05,110 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:05,124 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:05,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:05,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:05,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:05,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2018-10-04 12:47:05,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:47:05,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:47:05,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:05,260 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 23 states. [2018-10-04 12:47:06,045 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 32 new depth: 7 [2018-10-04 12:47:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:06,105 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-10-04 12:47:06,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:47:06,106 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2018-10-04 12:47:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:06,107 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:47:06,107 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:47:06,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 8 [2018-10-04 12:47:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:47:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:47:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:47:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:47:06,117 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-10-04 12:47:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:06,117 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:47:06,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:47:06,117 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:47:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:47:06,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:06,118 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 12:47:06,118 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:06,119 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 11 times [2018-10-04 12:47:06,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:06,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:06,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:06,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:06,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:06,646 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 18 [2018-10-04 12:47:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:06,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:06,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:06,743 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:06,780 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 12:47:06,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:06,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:06,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:06,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2018-10-04 12:47:06,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:47:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:47:06,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:06,980 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 25 states. [2018-10-04 12:47:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:07,925 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-10-04 12:47:07,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:47:07,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-04 12:47:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:07,928 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:47:07,928 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:47:07,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 27 [2018-10-04 12:47:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:47:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:47:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:47:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:47:07,938 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-10-04 12:47:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:07,939 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:47:07,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:47:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:47:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:47:07,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:07,940 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 12:47:07,940 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:07,940 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 12 times [2018-10-04 12:47:07,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:07,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:07,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:07,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:07,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:08,383 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:47:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:08,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:08,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:08,587 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:08,612 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2018-10-04 12:47:08,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:08,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:08,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:08,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-10-04 12:47:08,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:47:08,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:47:08,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:08,754 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 27 states. [2018-10-04 12:47:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:09,935 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-10-04 12:47:09,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:47:09,941 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2018-10-04 12:47:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:09,942 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:47:09,942 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:47:09,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 31 [2018-10-04 12:47:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:47:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:47:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:47:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:47:09,960 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-10-04 12:47:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:09,961 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:47:09,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:47:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:47:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:47:09,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:09,962 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 12:47:09,965 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:09,965 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 13 times [2018-10-04 12:47:09,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:09,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:09,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:09,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:09,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:10,459 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:10,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:10,660 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:10,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:10,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:10,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:10,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2018-10-04 12:47:10,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:47:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:47:10,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:10,875 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 29 states. [2018-10-04 12:47:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:12,121 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-10-04 12:47:12,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:47:12,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2018-10-04 12:47:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:12,123 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:47:12,123 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:47:12,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 28 [2018-10-04 12:47:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:47:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:47:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:47:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:47:12,137 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-10-04 12:47:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:12,138 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:47:12,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:47:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:47:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:47:12,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:12,139 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 12:47:12,139 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:12,139 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 14 times [2018-10-04 12:47:12,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:12,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:12,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:12,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:12,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:12,531 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 13 [2018-10-04 12:47:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:12,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:12,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:12,833 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:12,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:12,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:12,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:13,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:13,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2018-10-04 12:47:13,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:47:13,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:47:13,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:13,211 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 31 states. [2018-10-04 12:47:14,192 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 29 new depth: 13 [2018-10-04 12:47:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:14,967 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-10-04 12:47:14,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:47:14,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2018-10-04 12:47:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:14,968 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:47:14,968 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:47:14,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 22 [2018-10-04 12:47:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:47:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:47:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:47:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:47:14,982 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-10-04 12:47:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:14,982 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:47:14,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:47:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:47:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:47:14,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:14,986 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 12:47:14,987 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:14,987 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:14,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 15 times [2018-10-04 12:47:14,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:14,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:14,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:14,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:14,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:15,380 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:15,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:15,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:15,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:15,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 12:47:15,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:15,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:15,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:15,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2018-10-04 12:47:15,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:47:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:47:15,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:15,957 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 33 states. [2018-10-04 12:47:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:18,311 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-10-04 12:47:18,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:47:18,312 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2018-10-04 12:47:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:18,313 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:47:18,313 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:47:18,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 32 [2018-10-04 12:47:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:47:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:47:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:47:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:47:18,327 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-10-04 12:47:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:18,327 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:47:18,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:47:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:47:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:47:18,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:18,329 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 12:47:18,329 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:18,329 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:18,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 16 times [2018-10-04 12:47:18,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:18,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:18,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:18,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:18,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:19,227 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:19,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:19,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:19,710 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:19,773 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:19,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:19,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:20,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:20,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2018-10-04 12:47:20,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:47:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:47:20,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:20,014 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 35 states. [2018-10-04 12:47:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:23,339 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-10-04 12:47:23,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:47:23,340 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2018-10-04 12:47:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:23,341 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:47:23,341 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:47:23,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time 3.8s impTime 34 [2018-10-04 12:47:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:47:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:47:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:47:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:47:23,356 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-10-04 12:47:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:23,356 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:47:23,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:47:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:47:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:47:23,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:23,357 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 12:47:23,357 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:23,358 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 17 times [2018-10-04 12:47:23,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:23,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:23,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:23,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:23,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:23,848 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:24,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:24,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:24,341 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:24,425 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 12:47:24,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:24,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:24,658 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 24 [2018-10-04 12:47:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:24,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:24,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2018-10-04 12:47:24,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:47:24,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:47:24,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:24,697 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 37 states. [2018-10-04 12:47:26,455 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 39 new depth: 13 [2018-10-04 12:47:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:26,850 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-10-04 12:47:26,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:47:26,851 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2018-10-04 12:47:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:26,851 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:47:26,851 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:47:26,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 17 [2018-10-04 12:47:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:47:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:47:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:47:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:47:26,862 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-10-04 12:47:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:26,862 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:47:26,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:47:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:47:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:47:26,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:26,864 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 12:47:26,864 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:26,864 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:26,864 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 18 times [2018-10-04 12:47:26,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:26,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:26,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:27,335 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:47:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:28,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:28,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:28,070 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:28,111 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2018-10-04 12:47:28,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:28,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:28,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:28,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2018-10-04 12:47:28,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:47:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:47:28,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:28,289 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 39 states. [2018-10-04 12:47:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:30,490 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-10-04 12:47:30,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:47:30,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2018-10-04 12:47:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:30,492 INFO L225 Difference]: With dead ends: 81 [2018-10-04 12:47:30,492 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 12:47:30,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.7s impTime 25 [2018-10-04 12:47:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 12:47:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 12:47:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 12:47:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 12:47:30,507 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-10-04 12:47:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:30,507 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 12:47:30,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:47:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 12:47:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 12:47:30,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:30,509 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 12:47:30,509 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:30,509 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 19 times [2018-10-04 12:47:30,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:30,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:30,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:30,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:30,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:30,957 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 18 [2018-10-04 12:47:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:31,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:31,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:31,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:31,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:32,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:32,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2018-10-04 12:47:32,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:47:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:47:32,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:32,083 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 41 states. [2018-10-04 12:47:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:34,958 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-10-04 12:47:34,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:47:34,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 78 [2018-10-04 12:47:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:34,960 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:47:34,960 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 12:47:34,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.2s impTime 29 [2018-10-04 12:47:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 12:47:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 12:47:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 12:47:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 12:47:34,973 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-10-04 12:47:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:34,974 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 12:47:34,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:47:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 12:47:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 12:47:34,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:34,975 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 12:47:34,975 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:34,975 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 20 times [2018-10-04 12:47:34,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:34,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:34,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:34,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:34,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:35,531 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:47:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:36,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:36,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:36,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:36,404 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:36,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:36,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:36,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:36,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2018-10-04 12:47:36,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:47:36,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:47:36,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:36,702 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 43 states. [2018-10-04 12:47:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:39,919 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-10-04 12:47:39,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:47:39,920 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 82 [2018-10-04 12:47:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:39,921 INFO L225 Difference]: With dead ends: 89 [2018-10-04 12:47:39,921 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 12:47:39,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time 3.7s impTime 28 [2018-10-04 12:47:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 12:47:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 12:47:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 12:47:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 12:47:39,934 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-10-04 12:47:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:39,934 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 12:47:39,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:47:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 12:47:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 12:47:39,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:39,936 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 12:47:39,936 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:39,936 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:39,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 21 times [2018-10-04 12:47:39,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:39,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:39,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:39,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:39,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:40,361 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:40,920 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 23 [2018-10-04 12:47:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:41,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:41,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:41,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:41,291 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 12:47:41,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:41,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:41,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:41,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2018-10-04 12:47:41,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:47:41,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:47:41,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:41,517 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 45 states. [2018-10-04 12:47:44,198 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 41 new depth: 17 [2018-10-04 12:47:45,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:45,116 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-10-04 12:47:45,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:47:45,120 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 86 [2018-10-04 12:47:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:45,121 INFO L225 Difference]: With dead ends: 93 [2018-10-04 12:47:45,122 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 12:47:45,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 3.7s impTime 25 [2018-10-04 12:47:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 12:47:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 12:47:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 12:47:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 12:47:45,142 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-10-04 12:47:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:45,142 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 12:47:45,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:47:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 12:47:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 12:47:45,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:45,143 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 12:47:45,144 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:45,144 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 22 times [2018-10-04 12:47:45,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:45,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:45,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:45,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:45,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:45,871 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:46,434 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 24 [2018-10-04 12:47:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:46,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:46,949 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:46,957 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:46,993 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:46,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:46,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:47,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:47,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2018-10-04 12:47:47,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:47:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:47:47,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:47,227 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 47 states. [2018-10-04 12:47:49,876 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 42 new depth: 16 [2018-10-04 12:47:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:51,034 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-10-04 12:47:51,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:47:51,034 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 90 [2018-10-04 12:47:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:51,035 INFO L225 Difference]: With dead ends: 97 [2018-10-04 12:47:51,035 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 12:47:51,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time 4.3s impTime 28 [2018-10-04 12:47:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 12:47:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 12:47:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 12:47:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 12:47:51,052 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-10-04 12:47:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:51,052 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 12:47:51,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:47:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 12:47:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 12:47:51,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:51,053 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 12:47:51,054 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:51,054 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 23 times [2018-10-04 12:47:51,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:51,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:51,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:51,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:51,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:51,508 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:47:52,055 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 29 [2018-10-04 12:47:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:52,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:52,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:52,811 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:52,959 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 12:47:52,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:52,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:53,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:53,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2018-10-04 12:47:53,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:47:53,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:47:53,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:53,713 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 49 states. [2018-10-04 12:47:56,369 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 47 new depth: 23 [2018-10-04 12:47:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:57,898 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-10-04 12:47:57,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:47:57,898 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 94 [2018-10-04 12:47:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:57,899 INFO L225 Difference]: With dead ends: 101 [2018-10-04 12:47:57,899 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 12:47:57,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s Time 4.8s impTime 38 [2018-10-04 12:47:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 12:47:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 12:47:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 12:47:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 12:47:57,916 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-10-04 12:47:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:57,916 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 12:47:57,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:47:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 12:47:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 12:47:57,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:57,917 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 12:47:57,917 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:57,917 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 24 times [2018-10-04 12:47:57,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:57,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:57,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:57,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:57,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:58,614 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 13 [2018-10-04 12:47:59,318 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 29 new depth: 29 [2018-10-04 12:48:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:00,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:00,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:00,175 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:48:00,226 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2018-10-04 12:48:00,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:00,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:00,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:00,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2018-10-04 12:48:00,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:48:00,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:48:00,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:00,474 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 51 states. [2018-10-04 12:48:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:04,886 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-10-04 12:48:04,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:48:04,887 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 98 [2018-10-04 12:48:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:04,888 INFO L225 Difference]: With dead ends: 105 [2018-10-04 12:48:04,888 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 12:48:04,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s Time 5.4s impTime 44 [2018-10-04 12:48:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 12:48:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 12:48:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 12:48:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 12:48:04,905 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-10-04 12:48:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:04,906 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 12:48:04,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:48:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 12:48:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 12:48:04,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:04,907 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 12:48:04,907 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:04,907 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:04,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 25 times [2018-10-04 12:48:04,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:04,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:04,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:04,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:04,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:05,504 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:48:06,061 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 25 [2018-10-04 12:48:06,893 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 40 new depth: 40 [2018-10-04 12:48:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:06,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:06,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:06,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:07,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:07,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:07,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2018-10-04 12:48:07,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:48:07,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:48:07,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:07,473 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 53 states. [2018-10-04 12:48:11,690 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 58 new depth: 22 [2018-10-04 12:48:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:13,573 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-10-04 12:48:13,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:48:13,573 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 102 [2018-10-04 12:48:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:13,574 INFO L225 Difference]: With dead ends: 109 [2018-10-04 12:48:13,574 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 12:48:13,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8s Time 6.6s impTime 38 [2018-10-04 12:48:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 12:48:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 12:48:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 12:48:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 12:48:13,593 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-10-04 12:48:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:13,594 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 12:48:13,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:48:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 12:48:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 12:48:13,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:13,594 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 12:48:13,595 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:13,595 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 26 times [2018-10-04 12:48:13,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:13,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:13,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:13,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:13,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:14,064 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:48:14,827 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 32 new depth: 32 [2018-10-04 12:48:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:15,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:15,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:15,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:48:15,782 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:48:15,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:15,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:16,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:16,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2018-10-04 12:48:16,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:48:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:48:16,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:16,196 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 55 states. [2018-10-04 12:48:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:22,337 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-10-04 12:48:22,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:48:22,337 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 106 [2018-10-04 12:48:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:22,338 INFO L225 Difference]: With dead ends: 113 [2018-10-04 12:48:22,338 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 12:48:22,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8s Time 7.0s impTime 47 [2018-10-04 12:48:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 12:48:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 12:48:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 12:48:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 12:48:22,357 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-10-04 12:48:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:22,357 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 12:48:22,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:48:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 12:48:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 12:48:22,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:22,358 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 12:48:22,358 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:22,358 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 27 times [2018-10-04 12:48:22,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:22,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:22,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:22,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:22,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:22,823 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 18 [2018-10-04 12:48:24,080 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 34 new depth: 34 [2018-10-04 12:48:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:24,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:24,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:24,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:48:24,729 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 12:48:24,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:24,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:25,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:25,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2018-10-04 12:48:25,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:48:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:48:25,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:25,056 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 57 states. [2018-10-04 12:48:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:31,276 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-10-04 12:48:31,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:48:31,276 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 110 [2018-10-04 12:48:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:31,277 INFO L225 Difference]: With dead ends: 117 [2018-10-04 12:48:31,277 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 12:48:31,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s Time 7.4s impTime 45 [2018-10-04 12:48:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 12:48:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 12:48:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 12:48:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 12:48:31,297 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-10-04 12:48:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:31,297 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 12:48:31,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:48:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 12:48:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 12:48:31,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:31,298 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 12:48:31,298 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:31,298 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:31,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 28 times [2018-10-04 12:48:31,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:31,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:31,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:31,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:31,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:31,819 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:48:32,562 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 32 new depth: 32 [2018-10-04 12:48:33,506 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 47 new depth: 47 [2018-10-04 12:48:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:33,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:33,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:33,775 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:48:34,043 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:48:34,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:34,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:34,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:34,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2018-10-04 12:48:34,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:48:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:48:34,476 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:34,476 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 59 states. [2018-10-04 12:48:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:43,272 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-10-04 12:48:43,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:48:43,273 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 114 [2018-10-04 12:48:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:43,274 INFO L225 Difference]: With dead ends: 121 [2018-10-04 12:48:43,274 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 12:48:43,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9s Time 9.9s impTime 51 [2018-10-04 12:48:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 12:48:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 12:48:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 12:48:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 12:48:43,299 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-10-04 12:48:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:43,300 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 12:48:43,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:48:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 12:48:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 12:48:43,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:43,300 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 12:48:43,301 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:43,301 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 29 times [2018-10-04 12:48:43,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:43,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:43,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:43,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:43,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:43,956 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:48:44,517 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 25 [2018-10-04 12:48:45,302 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 40 new depth: 40 [2018-10-04 12:48:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:45,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:45,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:45,845 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:48:46,110 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-04 12:48:46,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:46,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:46,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:46,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2018-10-04 12:48:46,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:48:46,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:48:46,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:46,532 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 61 states. [2018-10-04 12:48:50,902 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 58 new depth: 27 [2018-10-04 12:48:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:53,513 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-10-04 12:48:53,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:48:53,517 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 118 [2018-10-04 12:48:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:53,518 INFO L225 Difference]: With dead ends: 125 [2018-10-04 12:48:53,518 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 12:48:53,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2s Time 7.9s impTime 32 [2018-10-04 12:48:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 12:48:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 12:48:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 12:48:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 12:48:53,548 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-10-04 12:48:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:53,549 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 12:48:53,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:48:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 12:48:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 12:48:53,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:53,550 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 12:48:53,550 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:53,550 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 30 times [2018-10-04 12:48:53,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:53,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:53,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:53,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:53,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:54,507 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 13 [2018-10-04 12:48:55,048 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 29 new depth: 29 [2018-10-04 12:48:55,830 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 44 new depth: 34 [2018-10-04 12:48:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:56,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:56,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:56,516 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:48:56,580 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 60 check-sat command(s) [2018-10-04 12:48:56,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:56,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:56,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:56,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2018-10-04 12:48:56,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:48:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:48:56,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:56,918 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 63 states. [2018-10-04 12:48:59,500 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 52 new depth: 38 [2018-10-04 12:49:02,417 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 55 new depth: 21 [2018-10-04 12:49:05,591 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 38 new depth: 22 [2018-10-04 12:49:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:05,899 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-10-04 12:49:05,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:49:05,900 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 122 [2018-10-04 12:49:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:05,901 INFO L225 Difference]: With dead ends: 129 [2018-10-04 12:49:05,901 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 12:49:05,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5s Time 9.6s impTime 22 [2018-10-04 12:49:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 12:49:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 12:49:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 12:49:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 12:49:05,923 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-10-04 12:49:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:05,923 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 12:49:05,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:49:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 12:49:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 12:49:05,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:05,924 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 12:49:05,924 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:05,924 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 31 times [2018-10-04 12:49:05,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:05,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:05,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:05,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:05,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:06,596 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:49:07,484 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 29 [2018-10-04 12:49:09,318 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 44 new depth: 44 [2018-10-04 12:49:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:09,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:09,609 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:09,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:10,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:10,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:10,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2018-10-04 12:49:10,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:49:10,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:49:10,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:10,497 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 65 states. [2018-10-04 12:49:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:18,522 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-10-04 12:49:18,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:49:18,523 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 126 [2018-10-04 12:49:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:18,524 INFO L225 Difference]: With dead ends: 133 [2018-10-04 12:49:18,524 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 12:49:18,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2s Time 9.7s impTime 54 [2018-10-04 12:49:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 12:49:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 12:49:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 12:49:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 12:49:18,553 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-10-04 12:49:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:18,553 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 12:49:18,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:49:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 12:49:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 12:49:18,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:18,554 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 12:49:18,554 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:18,555 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 32 times [2018-10-04 12:49:18,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:18,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:18,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:18,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:18,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:19,212 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:49:19,915 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 24 [2018-10-04 12:49:20,736 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 39 new depth: 39 [2018-10-04 12:49:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:21,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:21,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:21,705 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:49:22,087 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:49:22,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:22,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:22,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:22,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2018-10-04 12:49:22,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:49:22,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:49:22,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:22,959 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 67 states. [2018-10-04 12:49:28,858 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 57 new depth: 28 [2018-10-04 12:49:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:33,556 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-10-04 12:49:33,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:49:33,557 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 130 [2018-10-04 12:49:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:33,558 INFO L225 Difference]: With dead ends: 137 [2018-10-04 12:49:33,558 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 12:49:33,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5s Time 11.6s impTime 43 [2018-10-04 12:49:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 12:49:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 12:49:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 12:49:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 12:49:33,590 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-10-04 12:49:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:33,590 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 12:49:33,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:49:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 12:49:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 12:49:33,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:33,592 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 12:49:33,592 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:33,592 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 33 times [2018-10-04 12:49:33,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:33,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:33,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:33,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:34,184 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:49:34,764 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 23 [2018-10-04 12:49:36,409 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 38 new depth: 38 [2018-10-04 12:49:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:36,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:36,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:36,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:49:37,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-04 12:49:37,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:37,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:37,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:37,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2018-10-04 12:49:37,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:49:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:49:37,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:37,359 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 69 states. [2018-10-04 12:49:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:49,059 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-10-04 12:49:49,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:49:49,059 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 134 [2018-10-04 12:49:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:49,061 INFO L225 Difference]: With dead ends: 141 [2018-10-04 12:49:49,061 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 12:49:49,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5s Time 13.2s impTime 49 [2018-10-04 12:49:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 12:49:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 12:49:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 12:49:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 12:49:49,094 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-10-04 12:49:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:49,094 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 12:49:49,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:49:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 12:49:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 12:49:49,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:49,095 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 12:49:49,095 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:49,096 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:49,096 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 34 times [2018-10-04 12:49:49,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:49,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:49,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:49,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:49,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:50,002 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:49:51,315 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 32 new depth: 32 [2018-10-04 12:49:52,371 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 47 new depth: 47 [2018-10-04 12:49:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:52,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:52,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:52,955 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:49:52,997 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:49:52,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:53,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:53,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:53,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2018-10-04 12:49:53,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:49:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:49:53,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:53,375 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 71 states. [2018-10-04 12:50:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:05,315 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-10-04 12:50:05,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:50:05,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 138 [2018-10-04 12:50:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:05,317 INFO L225 Difference]: With dead ends: 145 [2018-10-04 12:50:05,318 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 12:50:05,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2s Time 13.9s impTime 56 [2018-10-04 12:50:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 12:50:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 12:50:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 12:50:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 12:50:05,349 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-10-04 12:50:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:05,350 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 12:50:05,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:50:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 12:50:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 12:50:05,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:05,351 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 12:50:05,351 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:05,351 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 35 times [2018-10-04 12:50:05,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:05,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:05,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:06,392 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 18 [2018-10-04 12:50:07,497 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 34 new depth: 34 [2018-10-04 12:50:08,518 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 49 new depth: 35 [2018-10-04 12:50:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:09,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:09,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:09,351 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:50:09,777 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-04 12:50:09,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:09,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:10,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:10,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2018-10-04 12:50:10,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:50:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:50:10,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:10,192 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 73 states. [2018-10-04 12:50:15,558 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 53 new depth: 37 [2018-10-04 12:50:21,567 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 57 new depth: 10 [2018-10-04 12:50:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:22,098 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-10-04 12:50:22,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:50:22,099 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 142 [2018-10-04 12:50:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:22,100 INFO L225 Difference]: With dead ends: 149 [2018-10-04 12:50:22,100 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 12:50:22,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2s Time 13.1s impTime 13 [2018-10-04 12:50:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 12:50:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 12:50:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 12:50:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 12:50:22,137 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-10-04 12:50:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:22,137 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 12:50:22,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:50:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 12:50:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 12:50:22,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:22,138 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-04 12:50:22,138 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:22,138 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 36 times [2018-10-04 12:50:22,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:22,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:22,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:22,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:22,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:25,113 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 16 [2018-10-04 12:50:26,348 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 32 new depth: 32 [2018-10-04 12:50:27,370 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 47 new depth: 47 [2018-10-04 12:50:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:28,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:28,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:28,251 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:50:28,375 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2018-10-04 12:50:28,375 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:28,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:28,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:28,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2018-10-04 12:50:28,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:50:28,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:50:28,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:28,892 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 75 states. [2018-10-04 12:50:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:41,540 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-10-04 12:50:41,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 12:50:41,540 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 146 [2018-10-04 12:50:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:41,541 INFO L225 Difference]: With dead ends: 153 [2018-10-04 12:50:41,541 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 12:50:41,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2s Time 16.5s impTime 60 [2018-10-04 12:50:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 12:50:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 12:50:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 12:50:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 12:50:41,571 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-10-04 12:50:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:41,571 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 12:50:41,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 12:50:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 12:50:41,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 12:50:41,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:41,572 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-04 12:50:41,573 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:41,573 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 37 times [2018-10-04 12:50:41,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:41,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:41,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:41,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:41,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:43,078 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:50:43,611 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 23 [2018-10-04 12:50:45,023 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 38 new depth: 38 [2018-10-04 12:50:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:46,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:46,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:46,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:50:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:47,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:47,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:47,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2018-10-04 12:50:47,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 12:50:47,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 12:50:47,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:47,905 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 77 states. [2018-10-04 12:51:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:03,281 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-10-04 12:51:03,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 12:51:03,281 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 150 [2018-10-04 12:51:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:03,282 INFO L225 Difference]: With dead ends: 157 [2018-10-04 12:51:03,282 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 12:51:03,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3s Time 17.7s impTime 55 [2018-10-04 12:51:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 12:51:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 12:51:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 12:51:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 12:51:03,325 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-10-04 12:51:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:03,325 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 12:51:03,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 12:51:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 12:51:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 12:51:03,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:03,327 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-04 12:51:03,327 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:03,327 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:03,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 38 times [2018-10-04 12:51:03,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:03,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:03,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:03,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:03,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:04,224 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 12:51:04,802 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 24 [2018-10-04 12:51:05,640 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 39 new depth: 39 Received shutdown request... [2018-10-04 12:51:06,625 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:51:06,630 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:51:06,630 INFO L202 PluginConnector]: Adding new model count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:51:06 BoogieIcfgContainer [2018-10-04 12:51:06,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:51:06,631 INFO L168 Benchmark]: Toolchain (without parser) took 253504.41 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -107.5 MB). Free memory was 1.5 GB in the beginning and 989.5 MB in the end (delta: 463.5 MB). Peak memory consumption was 356.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:51:06,633 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:51:06,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:51:06,634 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:51:06,635 INFO L168 Benchmark]: RCFGBuilder took 307.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:51:06,635 INFO L168 Benchmark]: TraceAbstraction took 253123.54 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -107.5 MB). Free memory was 1.4 GB in the beginning and 989.5 MB in the end (delta: 442.4 MB). Peak memory consumption was 334.9 MB. Max. memory is 7.1 GB. [2018-10-04 12:51:06,639 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 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 307.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253123.54 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -107.5 MB). Free memory was 1.4 GB in the beginning and 989.5 MB in the end (delta: 442.4 MB). Peak memory consumption was 334.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 38). Cancelled while BasicCegarLoop was analyzing trace of length 155 with TraceHistMax 76, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 153 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 253.0s OverallTime, 39 OverallIterations, 76 TraceHistogramMax, 167.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 189 SDtfs, 0 SDslu, 2909 SDs, 0 SdLazy, 3058 SolverSat, 1369 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5662 GetRequests, 2850 SyntacticMatches, 0 SemanticMatches, 2812 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 224.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 38 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 70.6s InterpolantComputationTime, 5776 NumberOfCodeBlocks, 5776 NumberOfCodeBlocksAsserted, 777 NumberOfCheckSat, 5701 ConstructedInterpolants, 0 QuantifiedInterpolants, 2857315 SizeOfPredicates, 74 NumberOfNonLiveVariables, 6105 ConjunctsInSsa, 1480 ConjunctsInUnsatCore, 75 InterpolantComputations, 1 PerfectInterpolantSequences, 0/137788 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/count_by_k.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-51-06-651.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_k.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-51-06-651.csv Completed graceful shutdown