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_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:46:55,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:46:55,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:46:55,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:46:55,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:46:55,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:46:55,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:46:55,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:46:55,089 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:46:55,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:46:55,091 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:46:55,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:46:55,092 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:46:55,095 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:46:55,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:46:55,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:46:55,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:46:55,106 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:46:55,110 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:46:55,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:46:55,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:46:55,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:46:55,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-04 12:46:55,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-04 12:46:55,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-04 12:46:55,124 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-04 12:46:55,125 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-04 12:46:55,126 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-04 12:46:55,127 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-04 12:46:55,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-04 12:46:55,131 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-04 12:46:55,132 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-04 12:46:55,132 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-04 12:46:55,132 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-04 12:46:55,135 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-04 12:46:55,136 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-04 12:46:55,137 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 12:46:55,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:46:55,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:46:55,167 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:46:55,167 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:46:55,167 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:46:55,168 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:46:55,168 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:46:55,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:46:55,168 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:46:55,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:46:55,169 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:46:55,170 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:46:55,170 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:46:55,170 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:46:55,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:46:55,171 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:46:55,171 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:46:55,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:46:55,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:46:55,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:46:55,172 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:46:55,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:46:55,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:46:55,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:46:55,249 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:46:55,250 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:46:55,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-10-04 12:46:55,251 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-10-04 12:46:55,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:46:55,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:46:55,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:46:55,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:46:55,303 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:46:55,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:46:55,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:46:55,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:46:55,342 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:46:55,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/1) ... [2018-10-04 12:46:55,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:46:55,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:46:55,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:46:55,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:46:55,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (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 12:46:55,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:46:55,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:46:55,634 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:46:55,635 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:46:55 BoogieIcfgContainer [2018-10-04 12:46:55,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:46:55,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:46:55,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:46:55,639 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:46:55,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:46:55" (1/2) ... [2018-10-04 12:46:55,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fbfbf and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:46:55, skipping insertion in model container [2018-10-04 12:46:55,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:46:55" (2/2) ... [2018-10-04 12:46:55,643 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-10-04 12:46:55,654 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:46:55,665 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:46:55,723 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:46:55,723 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:46:55,725 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:46:55,726 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:46:55,726 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:46:55,726 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:46:55,726 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:46:55,726 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:46:55,727 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:46:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:46:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:46:55,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:55,758 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:46:55,760 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:55,769 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 12:46:55,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:55,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:55,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:55,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:55,922 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 12:46:55,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:46:55,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:46:55,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:46:55,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:46:55,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:55,947 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 12:46:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:55,985 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 12:46:55,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:46:55,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:46:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:55,998 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:46:55,998 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:46:56,002 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 12:46:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:46:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:46:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:46:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:46:56,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 12:46:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:56,032 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:46:56,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:46:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:46:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:46:56,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:56,036 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 12:46:56,038 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:56,038 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:56,038 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 12:46:56,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:56,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:56,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:56,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:56,204 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 12:46:56,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:56,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:56,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:56,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:56,436 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 12:46:56,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:56,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 12:46:56,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:46:56,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:46:56,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:56,470 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 12:46:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:56,563 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:46:56,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:46:56,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 12:46:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:56,565 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:46:56,565 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:46:56,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-04 12:46:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:46:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:46:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:46:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:46:56,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 12:46:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:56,571 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:46:56,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:46:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:46:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:46:56,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:56,573 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 12:46:56,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:56,573 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 12:46:56,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:56,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:56,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:56,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:56,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:56,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:56,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:56,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:56,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:56,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:56,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:56,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 12:46:56,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:46:56,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:46:56,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:56,867 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 12:46:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:56,902 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:46:56,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:46:56,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 12:46:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:56,904 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:46:56,904 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:46:56,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 12:46:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:46:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:46:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:46:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:46:56,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 12:46:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:56,909 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:46:56,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:46:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:46:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:46:56,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:56,910 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 12:46:56,910 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:56,910 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 12:46:56,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:56,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:56,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:56,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:57,068 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 12:46:57,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:57,069 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 12:46:57,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:57,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 12:46:57,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:57,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:57,210 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 12:46:57,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:57,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 12:46:57,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:46:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:46:57,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:57,231 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-04 12:46:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:57,270 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 12:46:57,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:46:57,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 12:46:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:57,272 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:46:57,272 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:46:57,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 12:46:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:46:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:46:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:46:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 12:46:57,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-04 12:46:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:57,277 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 12:46:57,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:46:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 12:46:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:46:57,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:57,278 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-04 12:46:57,279 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:57,279 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:57,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-04 12:46:57,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:57,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:57,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:57,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:57,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:57,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:57,552 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:57,583 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:57,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:57,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:57,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:57,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 12:46:57,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:46:57,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:46:57,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:57,667 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-04 12:46:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:57,784 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 12:46:57,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:46:57,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-04 12:46:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:57,785 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:46:57,785 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:46:57,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 5 [2018-10-04 12:46:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:46:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:46:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:46:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:46:57,790 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-04 12:46:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:57,791 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:46:57,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:46:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:46:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:46:57,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:57,792 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 12:46:57,792 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:57,792 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-04 12:46:57,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:57,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:57,898 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 12:46:57,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:57,899 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 12:46:57,908 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:46:57,938 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 12:46:57,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:57,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:58,005 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 12:46:58,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:58,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 12:46:58,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:46:58,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:46:58,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:58,031 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-04 12:46:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:58,069 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 12:46:58,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:46:58,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-04 12:46:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:58,071 INFO L225 Difference]: With dead ends: 19 [2018-10-04 12:46:58,071 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 12:46:58,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 12:46:58,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 12:46:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 12:46:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 12:46:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 12:46:58,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-04 12:46:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:58,076 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 12:46:58,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:46:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 12:46:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 12:46:58,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:58,078 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-04 12:46:58,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:58,078 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-04 12:46:58,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:58,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:58,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:58,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:58,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:58,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:58,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:58,424 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:46:58,520 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 12:46:58,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:58,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:58,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:58,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 12:46:58,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:46:58,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:46:58,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:58,886 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-04 12:46:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:58,981 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 12:46:58,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:46:58,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-04 12:46:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:58,984 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:46:58,984 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:46:58,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 7 [2018-10-04 12:46:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:46:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:46:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:46:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:46:58,989 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-04 12:46:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:58,989 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:46:58,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:46:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:46:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:46:58,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:58,990 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 12:46:58,991 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:58,991 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-04 12:46:58,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:58,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:58,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:58,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:58,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:59,161 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 12:46:59,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:59,161 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 12:46:59,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:59,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:59,276 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 12:46:59,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:59,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 12:46:59,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:46:59,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:46:59,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:59,301 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-04 12:46:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:59,367 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 12:46:59,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:46:59,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-04 12:46:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:59,369 INFO L225 Difference]: With dead ends: 23 [2018-10-04 12:46:59,369 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 12:46:59,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 12:46:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 12:46:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 12:46:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:46:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 12:46:59,374 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-04 12:46:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:59,374 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 12:46:59,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:46:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 12:46:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:46:59,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:59,375 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-04 12:46:59,375 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:59,376 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-04 12:46:59,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:59,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:59,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:59,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:59,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:59,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:46:59,583 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:59,621 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:59,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:59,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:46:59,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:59,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 12:46:59,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:46:59,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:46:59,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:59,721 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-04 12:46:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:59,782 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 12:46:59,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:46:59,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-04 12:46:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:59,789 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:46:59,789 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:46:59,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-04 12:46:59,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:46:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:46:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:46:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:46:59,794 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-04 12:46:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:59,794 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:46:59,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:46:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:46:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:46:59,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:59,795 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 12:46:59,796 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:59,796 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-04 12:46:59,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:59,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:59,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:59,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:59,975 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 12:46:59,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:59,976 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 12:46:59,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:00,021 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 12:47:00,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:00,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:00,141 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 12:47:00,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:00,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 12:47:00,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:47:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:47:00,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:00,163 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-04 12:47:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:00,203 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 12:47:00,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:47:00,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-04 12:47:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:00,205 INFO L225 Difference]: With dead ends: 27 [2018-10-04 12:47:00,205 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:47:00,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-04 12:47:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:47:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:47:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:47:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 12:47:00,210 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-04 12:47:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:00,210 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 12:47:00,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:47:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 12:47:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:47:00,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:00,211 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-04 12:47:00,211 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:00,211 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-04 12:47:00,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:00,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:00,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:00,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:00,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:00,342 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 12:47:00,358 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:00,390 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:00,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:00,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:00,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:00,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 12:47:00,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:47:00,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:47:00,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:00,516 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-04 12:47:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:00,584 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 12:47:00,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:47:00,584 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-04 12:47:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:00,585 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:47:00,586 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:47:00,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 11 [2018-10-04 12:47:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:47:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:47:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:47:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:47:00,590 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-04 12:47:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:00,591 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:47:00,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:47:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:47:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:47:00,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:00,592 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 12:47:00,592 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:00,593 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-04 12:47:00,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:00,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:00,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,594 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:00,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:01,038 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 12:47:01,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:01,039 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:01,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:01,082 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 12:47:01,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:01,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:01,155 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 12:47:01,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:01,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 12:47:01,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:47:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:47:01,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:01,187 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-04 12:47:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:01,293 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 12:47:01,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:47:01,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-04 12:47:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:01,296 INFO L225 Difference]: With dead ends: 31 [2018-10-04 12:47:01,296 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:47:01,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-04 12:47:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:47:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:47:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:47:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 12:47:01,302 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-04 12:47:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:01,303 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 12:47:01,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:47:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 12:47:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:47:01,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:01,305 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-04 12:47:01,306 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:01,306 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-04 12:47:01,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:01,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:01,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:01,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:01,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:01,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:01,648 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:01,680 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 12:47:01,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:01,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:01,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:01,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 12:47:01,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:47:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:47:01,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:01,830 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-04 12:47:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:01,869 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 12:47:01,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:47:01,871 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-04 12:47:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:01,872 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:47:01,873 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:47:01,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 12:47:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:47:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:47:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:47:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:47:01,878 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-04 12:47:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:01,879 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:47:01,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:47:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:47:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:47:01,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:01,880 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 12:47:01,880 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:01,881 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-04 12:47:01,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:01,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:01,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:01,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:02,074 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 12:47:02,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:02,074 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 12:47:02,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:02,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:02,340 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 12:47:02,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:02,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 12:47:02,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:47:02,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:47:02,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:02,361 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-04 12:47:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:02,461 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 12:47:02,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:47:02,462 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-04 12:47:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:02,463 INFO L225 Difference]: With dead ends: 35 [2018-10-04 12:47:02,463 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:47:02,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 14 [2018-10-04 12:47:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:47:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:47:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:47:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 12:47:02,468 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-04 12:47:02,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:02,469 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 12:47:02,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:47:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 12:47:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:47:02,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:02,470 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-04 12:47:02,470 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:02,470 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:02,471 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-04 12:47:02,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:02,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:02,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:02,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:02,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:02,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:02,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:02,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:02,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:02,836 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:02,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:02,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:02,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 12:47:02,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:47:02,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:47:02,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:02,951 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-04 12:47:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:02,998 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 12:47:02,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:47:02,998 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-04 12:47:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:02,999 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:47:02,999 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:47:03,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 15 [2018-10-04 12:47:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:47:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:47:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:47:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:47:03,005 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-04 12:47:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:03,005 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:47:03,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:47:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:47:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:47:03,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:03,006 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 12:47:03,006 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:03,007 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:03,007 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-04 12:47:03,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:03,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:03,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:03,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:03,483 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 12:47:03,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:03,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:03,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:03,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 12:47:03,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:03,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:03,825 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 12:47:03,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:03,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 12:47:03,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:47:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:47:03,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:03,846 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-04 12:47:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:03,884 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 12:47:03,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:47:03,886 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-04 12:47:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:03,886 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:47:03,886 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:47:03,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 16 [2018-10-04 12:47:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:47:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:47:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:47:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 12:47:03,892 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-04 12:47:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:03,893 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 12:47:03,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:47:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 12:47:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:47:03,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:03,894 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-04 12:47:03,894 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:03,894 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:03,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-04 12:47:03,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:03,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:03,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:03,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:04,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:04,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:04,662 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:04,698 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:04,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:04,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:05,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:05,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 12:47:05,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:47:05,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:47:05,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:05,096 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-04 12:47:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:05,164 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 12:47:05,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:47:05,168 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-04 12:47:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:05,169 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:47:05,169 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:47:05,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 17 [2018-10-04 12:47:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:47:05,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:47:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:47:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:47:05,174 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-04 12:47:05,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:05,175 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:47:05,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:47:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:47:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:47:05,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:05,176 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 12:47:05,176 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:05,176 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:05,177 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-04 12:47:05,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:05,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:05,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:05,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:05,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:06,217 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 12:47:06,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:06,217 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 12:47:06,225 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:06,300 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 12:47:06,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:06,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:06,433 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 12:47:06,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:06,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 12:47:06,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:47:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:47:06,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:06,456 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-04 12:47:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:06,516 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 12:47:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:47:06,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-04 12:47:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:06,517 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:47:06,517 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:47:06,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 18 [2018-10-04 12:47:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:47:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:47:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:47:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 12:47:06,524 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-04 12:47:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:06,524 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 12:47:06,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:47:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 12:47:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:47:06,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:06,525 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-04 12:47:06,525 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:06,526 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-04 12:47:06,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:06,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:06,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:06,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:06,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:06,857 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:06,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:06,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:06,868 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:06,906 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 12:47:06,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:06,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:07,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:07,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 12:47:07,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:47:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:47:07,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:07,165 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-04 12:47:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:07,584 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 12:47:07,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:47:07,584 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-04 12:47:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:07,585 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:47:07,585 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:47:07,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 6 [2018-10-04 12:47:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:47:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:47:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:47:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:47:07,590 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-04 12:47:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:07,591 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:47:07,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:47:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:47:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:47:07,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:07,592 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 12:47:07,592 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:07,592 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-04 12:47:07,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:07,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:07,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:07,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:07,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:07,960 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:07,978 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 12:47:07,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:07,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:07,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:08,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:08,122 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 12:47:08,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:08,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 12:47:08,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:47:08,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:47:08,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:08,144 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-04 12:47:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:08,217 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 12:47:08,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:47:08,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-04 12:47:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:08,219 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:47:08,219 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:47:08,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 7 [2018-10-04 12:47:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:47:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:47:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:47:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 12:47:08,225 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-04 12:47:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:08,225 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 12:47:08,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:47:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 12:47:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:47:08,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:08,226 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-04 12:47:08,226 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:08,227 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-04 12:47:08,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:08,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:08,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:08,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:08,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:08,607 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:08,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:08,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:08,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:08,694 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:08,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:08,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:08,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:08,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 12:47:08,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:47:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:47:08,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:08,870 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-04 12:47:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:08,936 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 12:47:08,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:47:08,936 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-04 12:47:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:08,936 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:47:08,937 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:47:08,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 8 [2018-10-04 12:47:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:47:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:47:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:47:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:47:08,942 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-04 12:47:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:08,942 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:47:08,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:47:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:47:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:47:08,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:08,943 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 12:47:08,944 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:08,944 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-04 12:47:08,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:08,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:08,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:08,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:08,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:09,839 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:09,872 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 12:47:09,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:09,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:09,881 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:09,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 12:47:09,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:09,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:10,051 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 12:47:10,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:10,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 12:47:10,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:47:10,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:47:10,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:10,074 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-04 12:47:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:10,198 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 12:47:10,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:47:10,200 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-04 12:47:10,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:10,201 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:47:10,201 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:47:10,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 9 [2018-10-04 12:47:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:47:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:47:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:47:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 12:47:10,204 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-04 12:47:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:10,205 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 12:47:10,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:47:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 12:47:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:47:10,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:10,206 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-04 12:47:10,206 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:10,206 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-04 12:47:10,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:10,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:10,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:10,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:10,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:10,528 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:10,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:10,566 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 12:47:10,575 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:10,616 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:10,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:10,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:10,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:10,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 12:47:10,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:47:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:47:10,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:10,783 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-04 12:47:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:10,828 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 12:47:10,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:47:10,828 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-04 12:47:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:10,829 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:47:10,829 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:47:10,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 10 [2018-10-04 12:47:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:47:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:47:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:47:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:47:10,834 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-04 12:47:10,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:10,835 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:47:10,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:47:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:47:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:47:10,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:10,836 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 12:47:10,836 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:10,836 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-04 12:47:10,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:10,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:10,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:10,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:10,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:11,177 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:11,293 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 12:47:11,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:11,294 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 12:47:11,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:11,364 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 12:47:11,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:11,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:11,590 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 12:47:11,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:11,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 12:47:11,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:47:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:47:11,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:11,613 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-04 12:47:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:11,677 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 12:47:11,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:47:11,678 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-04 12:47:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:11,679 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:47:11,679 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:47:11,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 11 [2018-10-04 12:47:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:47:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:47:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:47:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 12:47:11,683 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-04 12:47:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:11,684 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 12:47:11,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:47:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 12:47:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:47:11,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:11,685 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-04 12:47:11,685 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:11,685 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-04 12:47:11,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:11,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:11,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:11,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:11,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:12,010 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:12,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:12,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:12,073 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:12,187 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 12:47:12,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:12,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:12,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:12,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 12:47:12,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:47:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:47:12,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:12,342 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-04 12:47:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:12,391 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 12:47:12,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:47:12,392 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-04 12:47:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:12,393 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:47:12,393 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:47:12,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-04 12:47:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:47:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:47:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:47:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:47:12,398 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-04 12:47:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:12,399 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:47:12,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:47:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:47:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:47:12,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:12,400 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 12:47:12,400 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:12,400 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:12,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-04 12:47:12,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:12,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:12,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:12,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:12,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:13,751 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:13,857 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 12:47:13,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:13,858 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 12:47:13,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:13,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:14,214 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 12:47:14,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:14,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 12:47:14,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:47:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:47:14,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:14,235 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-04 12:47:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:14,281 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 12:47:14,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:47:14,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-04 12:47:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:14,282 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:47:14,282 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:47:14,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 13 [2018-10-04 12:47:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:47:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:47:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:47:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 12:47:14,286 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-04 12:47:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:14,286 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 12:47:14,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:47:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 12:47:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:47:14,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:14,289 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-04 12:47:14,289 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:14,289 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:14,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-04 12:47:14,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:14,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:14,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:14,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:14,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:14,552 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:14,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:14,687 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 12:47:14,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:14,743 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:14,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:14,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:14,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:14,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 12:47:14,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:47:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:47:14,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:14,876 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-04 12:47:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:14,945 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 12:47:14,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:47:14,945 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-04 12:47:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:14,946 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:47:14,946 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:47:14,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 14 [2018-10-04 12:47:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:47:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:47:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:47:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:47:14,949 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-04 12:47:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:14,950 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:47:14,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:47:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:47:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:47:14,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:14,951 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 12:47:14,951 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:14,951 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-04 12:47:14,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:14,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:14,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:14,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:14,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:15,283 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:15,428 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 12:47:15,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:15,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:15,436 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:15,497 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 12:47:15,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:15,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:15,611 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 12:47:15,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:15,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 12:47:15,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:47:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:47:15,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:15,633 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-04 12:47:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:15,680 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 12:47:15,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:47:15,680 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-04 12:47:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:15,681 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:47:15,681 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:47:15,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 15 [2018-10-04 12:47:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:47:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:47:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:47:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 12:47:15,684 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-04 12:47:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:15,685 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 12:47:15,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:47:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 12:47:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:47:15,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:15,686 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-04 12:47:15,686 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:15,686 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:15,687 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-04 12:47:15,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:15,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:15,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:15,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:15,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:16,130 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:16,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:16,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:16,377 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:16,429 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:16,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:16,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:16,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:16,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 12:47:16,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:47:16,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:47:16,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:16,606 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-04 12:47:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:16,800 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 12:47:16,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:47:16,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-04 12:47:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:16,801 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:47:16,801 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:47:16,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 16 [2018-10-04 12:47:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:47:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:47:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:47:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:47:16,804 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-04 12:47:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:16,804 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:47:16,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:47:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:47:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:47:16,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:16,805 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 12:47:16,805 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:16,805 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:16,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-04 12:47:16,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:16,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:16,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:16,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:16,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:17,111 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:17,202 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 12:47:17,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:17,203 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 12:47:17,220 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:17,295 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 12:47:17,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:17,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:17,402 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 12:47:17,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:17,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 12:47:17,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:47:17,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:47:17,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:17,425 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-04 12:47:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:17,471 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 12:47:17,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:47:17,471 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-04 12:47:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:17,472 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:47:17,472 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:47:17,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 17 [2018-10-04 12:47:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:47:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:47:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:47:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 12:47:17,476 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-04 12:47:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:17,476 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 12:47:17,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:47:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 12:47:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:47:17,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:17,476 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-04 12:47:17,477 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:17,477 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:17,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-04 12:47:17,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:17,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:17,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:18,412 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:18,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:18,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:18,734 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:18,798 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 12:47:18,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:18,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:18,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:18,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 12:47:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:47:18,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:47:18,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:18,935 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-04 12:47:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:18,977 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 12:47:18,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:47:18,977 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-04 12:47:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:18,978 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:47:18,978 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:47:18,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 18 [2018-10-04 12:47:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:47:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:47:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:47:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:47:18,981 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-04 12:47:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:18,981 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:47:18,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:47:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:47:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:47:18,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:18,982 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 12:47:18,982 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:18,983 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:18,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-04 12:47:18,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:18,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:18,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:19,301 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:19,458 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 12:47:19,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:19,459 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:19,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:19,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:19,660 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 12:47:19,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:19,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 12:47:19,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:47:19,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:47:19,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:19,681 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-04 12:47:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:19,730 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 12:47:19,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:47:19,731 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-04 12:47:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:19,732 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:47:19,732 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:47:19,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 19 [2018-10-04 12:47:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:47:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:47:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:47:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 12:47:19,736 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-04 12:47:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:19,736 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 12:47:19,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:47:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 12:47:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:47:19,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:19,737 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-04 12:47:19,737 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:19,737 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-04 12:47:19,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:19,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:19,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:19,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:19,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:20,512 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:20,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:20,863 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 12:47:20,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:20,925 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:20,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:20,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:21,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:21,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 12:47:21,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:47:21,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:47:21,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:21,061 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-04 12:47:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:21,119 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 12:47:21,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:47:21,120 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-04 12:47:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:21,121 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:47:21,121 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:47:21,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 20 [2018-10-04 12:47:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:47:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:47:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:47:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:47:21,125 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-04 12:47:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:21,125 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:47:21,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:47:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:47:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:47:21,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:21,126 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 12:47:21,126 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:21,126 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-04 12:47:21,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:21,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:21,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:21,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:21,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:21,495 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:21,640 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 12:47:21,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:21,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:21,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:21,724 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 12:47:21,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:21,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:21,955 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 12:47:21,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:21,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 12:47:21,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:47:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:47:21,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:21,976 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-04 12:47:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:22,034 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 12:47:22,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:47:22,034 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-04 12:47:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:22,035 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:47:22,036 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:47:22,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 21 [2018-10-04 12:47:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:47:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:47:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:47:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 12:47:22,040 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-04 12:47:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:22,040 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 12:47:22,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:47:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 12:47:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:47:22,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:22,042 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-04 12:47:22,042 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:22,042 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-04 12:47:22,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:22,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:22,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:22,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:22,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:22,799 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:23,014 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:23,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:23,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:23,044 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:23,101 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:23,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:23,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:23,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:23,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 12:47:23,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:47:23,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:47:23,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:23,282 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-04 12:47:23,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:23,433 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 12:47:23,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:47:23,433 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-04 12:47:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:23,434 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:47:23,434 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:47:23,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 7 [2018-10-04 12:47:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:47:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:47:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:47:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:47:23,438 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-04 12:47:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:23,439 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:47:23,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:47:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:47:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:47:23,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:23,439 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 12:47:23,440 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:23,440 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:23,440 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-04 12:47:23,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:23,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:23,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:23,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:23,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:23,458 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: 6 [2018-10-04 12:47:24,169 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:24,202 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 12:47:24,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:24,202 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:24,210 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:24,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 12:47:24,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:24,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:24,937 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 12:47:24,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:24,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 12:47:24,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:47:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:47:24,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:24,958 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-04 12:47:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:25,066 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 12:47:25,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:47:25,068 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-04 12:47:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:25,069 INFO L225 Difference]: With dead ends: 79 [2018-10-04 12:47:25,069 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 12:47:25,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.5s impTime 8 [2018-10-04 12:47:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 12:47:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 12:47:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 12:47:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 12:47:25,072 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-04 12:47:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:25,072 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 12:47:25,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:47:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 12:47:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 12:47:25,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:25,073 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-04 12:47:25,073 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:25,074 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:25,074 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-04 12:47:25,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:25,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:25,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:25,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:25,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:25,448 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:25,891 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:26,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:26,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:47:26,151 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:26,224 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 12:47:26,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:26,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:26,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:26,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 12:47:26,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:47:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:47:26,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:26,385 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-04 12:47:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:26,453 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 12:47:26,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:47:26,453 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-04 12:47:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:26,454 INFO L225 Difference]: With dead ends: 81 [2018-10-04 12:47:26,454 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 12:47:26,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 9 [2018-10-04 12:47:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 12:47:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 12:47:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 12:47:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 12:47:26,457 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-04 12:47:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:26,457 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 12:47:26,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:47:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 12:47:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 12:47:26,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:26,458 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 12:47:26,458 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:26,458 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-04 12:47:26,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:26,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:26,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:26,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:26,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:27,038 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:28,157 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:28,264 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 12:47:28,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:28,264 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 12:47:28,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:28,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:28,502 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 12:47:28,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:28,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 12:47:28,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:47:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:47:28,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:28,523 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-04 12:47:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:28,615 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 12:47:28,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:47:28,616 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-04 12:47:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:28,617 INFO L225 Difference]: With dead ends: 83 [2018-10-04 12:47:28,617 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 12:47:28,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 10 [2018-10-04 12:47:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 12:47:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 12:47:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 12:47:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 12:47:28,621 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-04 12:47:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:28,621 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 12:47:28,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:47:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 12:47:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 12:47:28,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:28,622 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-04 12:47:28,622 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:28,623 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:28,623 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-04 12:47:28,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:28,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:28,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:28,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:28,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:29,033 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:29,630 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:29,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:29,773 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:29,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:29,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:29,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:29,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:30,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:30,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 12:47:30,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:47:30,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:47:30,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:30,044 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-04 12:47:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:30,173 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 12:47:30,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:47:30,173 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-04 12:47:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:30,174 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:47:30,174 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 12:47:30,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 11 [2018-10-04 12:47:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 12:47:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 12:47:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 12:47:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 12:47:30,177 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-04 12:47:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:30,189 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 12:47:30,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:47:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 12:47:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 12:47:30,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:30,190 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 12:47:30,190 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:30,191 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-04 12:47:30,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:30,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:30,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:30,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:30,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:30,467 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:30,670 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:30,746 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 12:47:30,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:30,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:30,754 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:30,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 12:47:30,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:30,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:30,976 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 12:47:30,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:30,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 12:47:30,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:47:30,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:47:30,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:30,997 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-04 12:47:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:31,076 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 12:47:31,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:47:31,077 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-04 12:47:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:31,078 INFO L225 Difference]: With dead ends: 87 [2018-10-04 12:47:31,078 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 12:47:31,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 12 [2018-10-04 12:47:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 12:47:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 12:47:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 12:47:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 12:47:31,080 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-04 12:47:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:31,081 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 12:47:31,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:47:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 12:47:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 12:47:31,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:31,081 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-04 12:47:31,081 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:31,081 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-04 12:47:31,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:31,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:31,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:31,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:31,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:31,353 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:31,728 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:32,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:32,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:32,062 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:32,130 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:32,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:32,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:32,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:32,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 12:47:32,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:47:32,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:47:32,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:32,375 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-04 12:47:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:32,539 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 12:47:32,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:47:32,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-04 12:47:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:32,541 INFO L225 Difference]: With dead ends: 89 [2018-10-04 12:47:32,541 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 12:47:32,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 13 [2018-10-04 12:47:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 12:47:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 12:47:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 12:47:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 12:47:32,547 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-04 12:47:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:32,547 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 12:47:32,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:47:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 12:47:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 12:47:32,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:32,548 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 12:47:32,548 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:32,548 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-04 12:47:32,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:32,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:32,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:32,867 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:33,244 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:33,498 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 12:47:33,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:33,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:33,507 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:33,612 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 12:47:33,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:33,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:33,829 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 12:47:33,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:33,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 12:47:33,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:47:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:47:33,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:33,850 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-04 12:47:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:33,951 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 12:47:33,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:47:33,952 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-04 12:47:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:33,953 INFO L225 Difference]: With dead ends: 91 [2018-10-04 12:47:33,953 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 12:47:33,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 14 [2018-10-04 12:47:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 12:47:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 12:47:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 12:47:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 12:47:33,957 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-04 12:47:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:33,957 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 12:47:33,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:47:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 12:47:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 12:47:33,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:33,958 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-04 12:47:33,958 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:33,958 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-04 12:47:33,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:33,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:33,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:33,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:33,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:34,237 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:34,640 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:34,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:34,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:34,809 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:34,902 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 12:47:34,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:34,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:35,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:35,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 12:47:35,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:47:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:47:35,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:35,089 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-04 12:47:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:35,158 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 12:47:35,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:47:35,159 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-04 12:47:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:35,160 INFO L225 Difference]: With dead ends: 93 [2018-10-04 12:47:35,160 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 12:47:35,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 15 [2018-10-04 12:47:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 12:47:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 12:47:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 12:47:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 12:47:35,164 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-04 12:47:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:35,165 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 12:47:35,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:47:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 12:47:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 12:47:35,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:35,165 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 12:47:35,166 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:35,166 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:35,166 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-04 12:47:35,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:35,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:35,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:35,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:35,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:35,525 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:36,217 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:36,517 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 12:47:36,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:36,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:36,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:36,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:36,764 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 12:47:36,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:36,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 12:47:36,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:47:36,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:47:36,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:36,786 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-04 12:47:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:36,879 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 12:47:36,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:47:36,879 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-04 12:47:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:36,880 INFO L225 Difference]: With dead ends: 95 [2018-10-04 12:47:36,880 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:47:36,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.6s impTime 16 [2018-10-04 12:47:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:47:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 12:47:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 12:47:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 12:47:36,883 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-04 12:47:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:36,884 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 12:47:36,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:47:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 12:47:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 12:47:36,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:36,885 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-04 12:47:36,885 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:36,885 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:36,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-04 12:47:36,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:36,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:36,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:36,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:36,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:38,434 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:38,627 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:38,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:38,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:38,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:38,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:38,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:38,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:39,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:39,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 12:47:39,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:47:39,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:47:39,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:39,258 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-04 12:47:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:39,499 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 12:47:39,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:47:39,499 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-04 12:47:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:39,500 INFO L225 Difference]: With dead ends: 97 [2018-10-04 12:47:39,500 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 12:47:39,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime 17 [2018-10-04 12:47:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 12:47:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 12:47:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 12:47:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 12:47:39,504 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-04 12:47:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:39,504 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 12:47:39,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:47:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 12:47:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 12:47:39,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:39,505 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 12:47:39,505 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:39,505 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-04 12:47:39,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:39,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:39,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:39,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:39,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:39,892 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:40,065 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:40,293 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 12:47:40,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:40,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:40,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:40,448 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 12:47:40,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:40,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:40,631 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 12:47:40,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:40,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 12:47:40,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:47:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:47:40,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:40,652 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-04 12:47:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:40,728 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 12:47:40,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:47:40,728 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-04 12:47:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:40,729 INFO L225 Difference]: With dead ends: 99 [2018-10-04 12:47:40,730 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 12:47:40,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 18 [2018-10-04 12:47:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 12:47:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 12:47:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 12:47:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 12:47:40,732 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-04 12:47:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:40,732 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 12:47:40,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:47:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 12:47:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 12:47:40,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:40,733 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-04 12:47:40,733 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:40,733 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:40,733 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-04 12:47:40,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:40,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:40,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:40,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:40,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:42,069 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:42,734 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:43,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:43,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:43,196 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:43,272 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:43,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:43,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:44,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:44,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 12:47:44,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:47:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:47:44,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:44,588 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-04 12:47:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:44,690 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 12:47:44,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:47:44,691 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-04 12:47:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:44,691 INFO L225 Difference]: With dead ends: 101 [2018-10-04 12:47:44,691 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 12:47:44,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.0s impTime 19 [2018-10-04 12:47:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 12:47:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 12:47:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 12:47:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 12:47:44,695 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-04 12:47:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:44,695 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 12:47:44,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:47:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 12:47:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 12:47:44,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:44,696 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 12:47:44,696 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:44,697 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:44,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-04 12:47:44,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:44,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:44,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:44,698 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:44,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:45,128 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:45,333 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:45,571 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 12:47:45,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:45,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:45,580 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:45,686 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 12:47:45,687 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:45,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:45,992 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 12:47:46,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:46,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 12:47:46,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:47:46,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:47:46,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:46,013 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-04 12:47:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:46,091 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 12:47:46,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:47:46,091 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-04 12:47:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:46,092 INFO L225 Difference]: With dead ends: 103 [2018-10-04 12:47:46,092 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 12:47:46,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 20 [2018-10-04 12:47:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 12:47:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 12:47:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 12:47:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 12:47:46,096 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-04 12:47:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:46,096 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 12:47:46,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:47:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 12:47:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 12:47:46,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:46,097 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-04 12:47:46,097 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:46,097 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:46,097 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-04 12:47:46,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:46,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:46,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:46,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:46,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:46,390 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:46,707 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:46,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:46,882 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:46,890 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:46,998 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 12:47:46,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:47,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:47,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:47,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 12:47:47,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:47:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:47:47,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:47,191 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-04 12:47:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:47,329 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 12:47:47,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:47:47,329 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-04 12:47:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:47,330 INFO L225 Difference]: With dead ends: 105 [2018-10-04 12:47:47,330 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 12:47:47,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 21 [2018-10-04 12:47:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 12:47:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 12:47:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 12:47:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 12:47:47,334 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-04 12:47:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:47,334 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 12:47:47,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:47:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 12:47:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 12:47:47,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:47,335 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 12:47:47,335 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:47,335 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-04 12:47:47,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:47,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:47,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:47,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:47,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:47,832 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:48,008 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:48,365 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:48,375 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 12:47:48,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:48,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:48,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:48,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:48,629 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 12:47:48,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:48,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 12:47:48,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:47:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:47:48,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:48,650 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-04 12:47:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:48,734 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 12:47:48,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:47:48,735 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-04 12:47:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:48,735 INFO L225 Difference]: With dead ends: 107 [2018-10-04 12:47:48,735 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 12:47:48,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 7 [2018-10-04 12:47:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 12:47:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 12:47:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 12:47:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 12:47:48,738 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-04 12:47:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:48,739 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 12:47:48,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:47:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 12:47:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 12:47:48,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:48,740 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-04 12:47:48,740 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:48,740 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-04 12:47:48,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:48,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:48,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:48,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:47:48,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:49,050 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:49,467 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:50,116 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:50,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:50,183 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:50,208 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:47:50,284 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:47:50,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:50,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:50,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:50,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 12:47:50,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:47:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:47:50,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:50,606 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-04 12:47:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:50,780 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 12:47:50,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:47:50,781 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-04 12:47:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:50,782 INFO L225 Difference]: With dead ends: 109 [2018-10-04 12:47:50,782 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 12:47:50,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 8 [2018-10-04 12:47:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 12:47:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 12:47:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 12:47:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 12:47:50,785 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-04 12:47:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:50,786 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 12:47:50,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:47:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 12:47:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 12:47:50,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:50,787 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 12:47:50,787 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:50,787 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:50,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-04 12:47:50,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:50,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:50,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:50,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:50,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:51,416 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:51,755 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:52,285 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:52,424 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 12:47:52,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:52,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:52,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:47:52,556 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 12:47:52,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:52,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:53,058 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 12:47:53,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:53,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 12:47:53,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:47:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:47:53,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:53,079 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-04 12:47:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:53,180 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 12:47:53,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:47:53,180 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-04 12:47:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:53,181 INFO L225 Difference]: With dead ends: 111 [2018-10-04 12:47:53,181 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 12:47:53,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.2s impTime 9 [2018-10-04 12:47:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 12:47:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 12:47:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 12:47:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 12:47:53,184 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-04 12:47:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:53,184 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 12:47:53,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:47:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 12:47:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 12:47:53,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:53,185 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-04 12:47:53,185 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:53,185 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-04 12:47:53,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:53,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:53,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:53,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:53,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:53,443 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:53,777 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:54,311 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:54,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:54,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:54,458 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:47:54,546 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:47:54,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:54,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:54,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:54,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 12:47:54,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:47:54,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:47:54,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:54,743 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-04 12:47:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:54,851 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 12:47:54,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:47:54,852 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-04 12:47:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:54,853 INFO L225 Difference]: With dead ends: 113 [2018-10-04 12:47:54,853 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 12:47:54,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 10 [2018-10-04 12:47:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 12:47:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 12:47:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 12:47:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 12:47:54,857 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-04 12:47:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:54,857 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 12:47:54,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:47:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 12:47:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 12:47:54,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:54,858 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 12:47:54,858 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:54,858 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:54,858 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-04 12:47:54,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:54,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:54,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:54,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:54,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:55,133 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:55,508 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:56,117 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:56,233 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 12:47:56,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:56,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:56,267 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:47:56,445 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 12:47:56,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:56,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:56,721 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 12:47:56,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:56,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 12:47:56,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:47:56,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:47:56,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:56,743 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-04 12:47:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:56,817 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 12:47:56,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:47:56,818 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-04 12:47:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:56,818 INFO L225 Difference]: With dead ends: 115 [2018-10-04 12:47:56,818 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 12:47:56,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 11 [2018-10-04 12:47:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 12:47:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 12:47:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 12:47:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 12:47:56,822 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-04 12:47:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:56,822 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 12:47:56,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:47:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 12:47:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 12:47:56,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:56,823 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-04 12:47:56,823 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:56,823 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-04 12:47:56,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:56,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:56,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:56,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:56,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:57,292 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:47:57,593 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:58,220 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:47:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:58,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:47:58,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:47:58,474 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:47:58,602 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 12:47:58,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:47:58,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:47:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:47:58,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:47:58,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 12:47:58,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:47:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:47:58,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:47:58,967 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-04 12:47:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:47:59,680 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 12:47:59,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:47:59,680 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-04 12:47:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:47:59,681 INFO L225 Difference]: With dead ends: 117 [2018-10-04 12:47:59,681 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 12:47:59,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 12 [2018-10-04 12:47:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 12:47:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 12:47:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 12:47:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 12:47:59,685 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-04 12:47:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:47:59,685 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 12:47:59,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:47:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 12:47:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 12:47:59,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:47:59,686 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 12:47:59,686 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:47:59,686 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:47:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-04 12:47:59,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:47:59,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:47:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:59,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:47:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:47:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:47:59,985 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:00,188 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:00,557 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:00,854 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 12:48:00,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:00,855 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:00,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:00,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:01,555 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 12:48:01,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:01,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 12:48:01,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:48:01,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:48:01,576 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:01,576 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-04 12:48:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:01,845 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 12:48:01,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:48:01,845 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-04 12:48:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:01,846 INFO L225 Difference]: With dead ends: 119 [2018-10-04 12:48:01,846 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 12:48:01,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.9s impTime 13 [2018-10-04 12:48:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 12:48:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 12:48:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 12:48:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 12:48:01,850 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-04 12:48:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:01,850 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 12:48:01,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:48:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 12:48:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 12:48:01,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:01,851 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-04 12:48:01,851 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:01,851 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-04 12:48:01,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:01,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:01,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:01,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:01,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:02,117 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:02,341 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:03,022 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:03,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:03,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:03,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:48:03,499 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:48:03,499 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:03,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:04,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:04,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 12:48:04,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:48:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:48:04,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:04,769 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-04 12:48:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:05,089 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 12:48:05,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:48:05,090 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-04 12:48:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:05,091 INFO L225 Difference]: With dead ends: 121 [2018-10-04 12:48:05,091 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 12:48:05,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.2s impTime 14 [2018-10-04 12:48:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 12:48:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 12:48:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 12:48:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 12:48:05,094 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-04 12:48:05,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:05,094 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 12:48:05,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:48:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 12:48:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 12:48:05,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:05,095 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 12:48:05,095 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:05,095 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-04 12:48:05,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:05,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:05,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:05,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:05,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:05,388 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:05,766 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:06,376 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:06,510 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 12:48:06,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:06,510 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:06,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:48:06,651 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 12:48:06,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:06,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:06,966 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 12:48:06,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:06,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 12:48:06,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:48:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:48:06,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:06,987 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-04 12:48:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:07,081 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 12:48:07,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:48:07,081 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-04 12:48:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:07,082 INFO L225 Difference]: With dead ends: 123 [2018-10-04 12:48:07,082 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 12:48:07,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 15 [2018-10-04 12:48:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 12:48:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 12:48:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 12:48:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 12:48:07,085 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-04 12:48:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:07,085 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 12:48:07,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:48:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 12:48:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 12:48:07,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:07,086 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-04 12:48:07,086 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:07,086 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:07,086 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-04 12:48:07,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:07,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:07,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:07,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:07,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:07,384 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:07,720 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:08,457 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:08,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:08,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:08,866 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:48:08,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:48:08,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:08,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:09,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:09,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 12:48:09,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:48:09,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:48:09,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:09,196 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-04 12:48:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:09,318 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 12:48:09,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:48:09,319 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-04 12:48:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:09,319 INFO L225 Difference]: With dead ends: 125 [2018-10-04 12:48:09,319 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 12:48:09,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 16 [2018-10-04 12:48:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 12:48:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 12:48:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 12:48:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 12:48:09,323 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-04 12:48:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:09,323 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 12:48:09,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:48:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 12:48:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 12:48:09,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:09,324 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 12:48:09,324 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:09,324 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:09,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-04 12:48:09,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:09,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:09,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:09,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:09,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:09,570 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:09,888 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:10,446 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:10,949 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 12:48:10,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:10,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:10,957 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:48:11,093 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 12:48:11,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:11,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:11,495 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 12:48:11,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:11,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 12:48:11,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:48:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:48:11,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:11,516 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-04 12:48:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:11,656 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 12:48:11,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:48:11,657 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-04 12:48:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:11,657 INFO L225 Difference]: With dead ends: 127 [2018-10-04 12:48:11,657 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 12:48:11,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 17 [2018-10-04 12:48:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 12:48:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 12:48:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 12:48:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-04 12:48:11,662 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-04 12:48:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:11,662 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-04 12:48:11,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:48:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-04 12:48:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 12:48:11,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:11,663 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-04 12:48:11,664 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:11,664 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:11,664 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-04 12:48:11,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:11,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:11,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:11,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:11,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:12,058 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:12,473 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:13,336 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:13,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:13,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:13,904 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:48:14,046 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 12:48:14,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:14,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:14,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:14,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 12:48:14,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:48:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:48:14,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:14,357 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-04 12:48:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:14,521 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 12:48:14,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:48:14,521 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-04 12:48:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:14,523 INFO L225 Difference]: With dead ends: 129 [2018-10-04 12:48:14,523 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 12:48:14,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 18 [2018-10-04 12:48:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 12:48:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 12:48:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 12:48:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 12:48:14,527 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-04 12:48:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:14,527 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 12:48:14,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:48:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 12:48:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 12:48:14,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:14,528 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 12:48:14,529 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:14,529 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:14,529 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-04 12:48:14,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:14,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:14,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:14,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:14,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:15,266 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:15,438 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:15,793 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:16,204 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 12:48:16,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:16,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:16,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:16,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:16,572 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 12:48:16,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:16,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 12:48:16,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:48:16,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:48:16,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:16,593 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-04 12:48:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:16,727 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 12:48:16,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:48:16,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-04 12:48:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:16,728 INFO L225 Difference]: With dead ends: 131 [2018-10-04 12:48:16,728 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 12:48:16,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 19 [2018-10-04 12:48:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 12:48:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 12:48:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 12:48:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-04 12:48:16,732 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-04 12:48:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:16,732 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-04 12:48:16,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:48:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-04 12:48:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 12:48:16,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:16,733 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-04 12:48:16,733 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:16,733 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:16,734 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-04 12:48:16,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:16,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:16,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:16,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:16,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:17,162 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:17,483 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:17,699 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:18,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:18,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:18,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:48:18,219 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:48:18,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:18,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:18,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:18,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 12:48:18,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:48:18,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:48:18,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:18,537 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-04 12:48:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:18,657 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 12:48:18,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:48:18,658 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-04 12:48:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:18,659 INFO L225 Difference]: With dead ends: 133 [2018-10-04 12:48:18,659 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 12:48:18,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 20 [2018-10-04 12:48:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 12:48:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 12:48:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 12:48:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 12:48:18,663 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-04 12:48:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:18,663 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 12:48:18,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:48:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 12:48:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 12:48:18,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:18,664 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 12:48:18,665 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:18,665 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:18,665 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-04 12:48:18,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:18,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:18,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:18,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:18,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:18,946 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:19,149 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:19,459 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:19,905 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 12:48:19,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:19,905 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:19,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:48:20,075 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 12:48:20,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:20,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:20,290 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 12:48:20,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:20,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 12:48:20,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:48:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:48:20,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:20,311 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-04 12:48:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:20,443 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 12:48:20,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:48:20,444 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-04 12:48:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:20,444 INFO L225 Difference]: With dead ends: 135 [2018-10-04 12:48:20,444 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 12:48:20,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 21 [2018-10-04 12:48:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 12:48:20,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 12:48:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 12:48:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-04 12:48:20,447 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-04 12:48:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:20,448 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-04 12:48:20,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:48:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-04 12:48:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 12:48:20,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:20,449 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-04 12:48:20,449 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:20,449 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-04 12:48:20,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:20,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:20,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:20,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:20,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:20,756 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:21,182 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:21,791 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:22,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:22,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:22,606 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:48:22,708 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:48:22,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:22,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:22,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:22,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 12:48:22,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:48:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:48:22,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:22,966 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-04 12:48:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:23,159 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 12:48:23,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:48:23,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-04 12:48:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:23,161 INFO L225 Difference]: With dead ends: 137 [2018-10-04 12:48:23,161 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 12:48:23,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 22 [2018-10-04 12:48:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 12:48:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 12:48:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 12:48:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 12:48:23,165 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-04 12:48:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:23,165 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 12:48:23,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:48:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 12:48:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 12:48:23,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:23,166 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 12:48:23,167 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:23,167 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-04 12:48:23,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:23,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:23,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:23,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:23,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:23,587 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:23,792 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:24,201 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:25,050 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 12:48:25,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:25,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:25,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:48:25,217 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 12:48:25,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:25,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:25,488 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 12:48:25,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:25,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 12:48:25,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:48:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:48:25,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:25,510 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-04 12:48:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:25,668 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 12:48:25,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:48:25,668 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-04 12:48:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:25,669 INFO L225 Difference]: With dead ends: 139 [2018-10-04 12:48:25,669 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 12:48:25,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 23 [2018-10-04 12:48:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 12:48:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 12:48:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 12:48:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-04 12:48:25,672 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-04 12:48:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:25,672 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-04 12:48:25,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:48:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-04 12:48:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 12:48:25,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:25,673 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-04 12:48:25,673 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:25,673 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-04 12:48:25,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:25,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:25,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:25,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:25,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:25,943 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:26,158 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:26,477 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:27,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:27,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:27,059 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:48:27,221 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 12:48:27,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:27,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:27,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:27,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 12:48:27,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:48:27,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:48:27,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:27,539 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-04 12:48:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:27,683 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 12:48:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:48:27,684 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-04 12:48:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:27,684 INFO L225 Difference]: With dead ends: 141 [2018-10-04 12:48:27,685 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 12:48:27,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 24 [2018-10-04 12:48:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 12:48:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 12:48:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 12:48:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 12:48:27,688 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-04 12:48:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:27,688 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 12:48:27,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:48:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 12:48:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 12:48:27,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:27,689 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 12:48:27,690 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:27,690 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-04 12:48:27,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:27,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:27,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:27,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:27,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:27,989 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:28,467 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:29,053 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:30,051 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:30,068 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 12:48:30,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:30,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:30,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:30,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:30,649 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 12:48:30,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:30,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 12:48:30,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:48:30,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:48:30,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:30,671 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-04 12:48:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:30,847 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 12:48:30,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:48:30,848 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-04 12:48:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:30,848 INFO L225 Difference]: With dead ends: 143 [2018-10-04 12:48:30,848 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 12:48:30,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 8 [2018-10-04 12:48:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 12:48:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 12:48:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 12:48:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-04 12:48:30,851 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-04 12:48:30,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:30,851 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-04 12:48:30,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:48:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-04 12:48:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 12:48:30,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:30,852 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-04 12:48:30,852 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:30,852 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-04 12:48:30,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:30,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:30,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:30,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:30,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:31,233 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:31,719 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:32,068 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:33,060 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:33,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:33,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:33,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:48:33,256 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:48:33,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:33,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:33,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:33,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 12:48:33,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:48:33,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:48:33,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:33,742 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-04 12:48:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:33,918 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 12:48:33,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:48:33,918 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-04 12:48:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:33,919 INFO L225 Difference]: With dead ends: 145 [2018-10-04 12:48:33,919 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 12:48:33,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.8s impTime 9 [2018-10-04 12:48:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 12:48:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 12:48:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 12:48:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 12:48:33,923 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-04 12:48:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:33,923 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 12:48:33,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:48:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 12:48:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 12:48:33,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:33,924 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 12:48:33,924 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:33,924 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-04 12:48:33,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:33,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:33,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:34,201 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:34,577 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:35,186 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:36,179 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:36,320 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 12:48:36,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:36,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:36,327 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:48:36,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 12:48:36,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:36,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:36,738 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 12:48:36,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:36,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 12:48:36,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:48:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:48:36,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:36,759 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-04 12:48:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:36,984 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-04 12:48:36,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:48:36,984 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-04 12:48:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:36,985 INFO L225 Difference]: With dead ends: 147 [2018-10-04 12:48:36,985 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 12:48:36,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 10 [2018-10-04 12:48:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 12:48:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 12:48:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 12:48:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-04 12:48:36,989 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-04 12:48:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:36,989 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-04 12:48:36,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:48:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-04 12:48:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 12:48:36,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:36,990 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-04 12:48:36,990 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:36,990 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-04 12:48:36,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:36,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:36,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:37,240 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:37,616 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:38,207 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:39,477 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:39,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:39,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:39,688 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:48:39,801 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:48:39,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:39,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:40,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:40,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 12:48:40,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:48:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:48:40,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:40,058 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-04 12:48:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:40,262 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 12:48:40,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:48:40,262 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-04 12:48:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:40,263 INFO L225 Difference]: With dead ends: 149 [2018-10-04 12:48:40,263 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 12:48:40,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 11 [2018-10-04 12:48:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 12:48:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 12:48:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 12:48:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 12:48:40,267 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-04 12:48:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:40,267 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 12:48:40,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:48:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 12:48:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 12:48:40,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:40,268 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-04 12:48:40,268 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:40,268 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-04 12:48:40,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:40,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:40,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:40,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:40,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:40,554 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:40,757 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:41,129 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:42,120 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:42,389 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 12:48:42,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:42,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:42,397 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:48:42,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 12:48:42,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:42,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:42,853 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 12:48:42,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:42,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 12:48:42,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:48:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:48:42,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:42,875 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-04 12:48:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:43,076 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-04 12:48:43,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 12:48:43,077 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-04 12:48:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:43,078 INFO L225 Difference]: With dead ends: 151 [2018-10-04 12:48:43,078 INFO L226 Difference]: Without dead ends: 149 [2018-10-04 12:48:43,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 12 [2018-10-04 12:48:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-04 12:48:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-04 12:48:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 12:48:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-04 12:48:43,082 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-04 12:48:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:43,082 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-04 12:48:43,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 12:48:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-04 12:48:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 12:48:43,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:43,083 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-04 12:48:43,083 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:43,083 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-04 12:48:43,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:43,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:43,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:43,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:43,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:43,360 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:44,015 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:44,502 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:44,773 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:44,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:44,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:44,914 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:48:45,093 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 12:48:45,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:45,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:45,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:45,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 12:48:45,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:48:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:48:45,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:45,416 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-04 12:48:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:45,553 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 12:48:45,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 12:48:45,553 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-04 12:48:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:45,554 INFO L225 Difference]: With dead ends: 153 [2018-10-04 12:48:45,554 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 12:48:45,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 13 [2018-10-04 12:48:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 12:48:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 12:48:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 12:48:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 12:48:45,558 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-04 12:48:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:45,558 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 12:48:45,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 12:48:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 12:48:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 12:48:45,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:45,559 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-04 12:48:45,560 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:45,560 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:45,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-04 12:48:45,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:45,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:45,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:45,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:45,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:45,961 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:46,337 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:46,945 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:47,937 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:48,336 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 12:48:48,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:48,337 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:48,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:48,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:48,750 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 12:48:48,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:48,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 12:48:48,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 12:48:48,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 12:48:48,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:48,772 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-04 12:48:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:49,011 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-04 12:48:49,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 12:48:49,011 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-04 12:48:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:49,012 INFO L225 Difference]: With dead ends: 155 [2018-10-04 12:48:49,012 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 12:48:49,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 14 [2018-10-04 12:48:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 12:48:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-04 12:48:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-04 12:48:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-04 12:48:49,015 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-04 12:48:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:49,015 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-04 12:48:49,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 12:48:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-04 12:48:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-04 12:48:49,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:49,016 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-04 12:48:49,016 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:49,016 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-04 12:48:49,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:49,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:49,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:49,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:48:49,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:49,269 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:49,671 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:49,916 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:50,313 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:50,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:50,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:50,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:48:50,671 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:48:50,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:50,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:50,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:50,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 12:48:50,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 12:48:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 12:48:50,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:50,977 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-04 12:48:51,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:51,124 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 12:48:51,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 12:48:51,125 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-04 12:48:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:51,126 INFO L225 Difference]: With dead ends: 157 [2018-10-04 12:48:51,126 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 12:48:51,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 15 [2018-10-04 12:48:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 12:48:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 12:48:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 12:48:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 12:48:51,129 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-04 12:48:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:51,129 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 12:48:51,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 12:48:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 12:48:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 12:48:51,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:51,130 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-04 12:48:51,130 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:51,130 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-04 12:48:51,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:51,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:51,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:51,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:51,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:51,368 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:51,686 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:52,218 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:53,239 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:53,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:53,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:53,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:48:53,730 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 12:48:53,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:53,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:54,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:54,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 12:48:54,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 12:48:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 12:48:54,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:54,258 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-04 12:48:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:54,422 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-04 12:48:54,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 12:48:54,423 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-04 12:48:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:54,424 INFO L225 Difference]: With dead ends: 159 [2018-10-04 12:48:54,424 INFO L226 Difference]: Without dead ends: 157 [2018-10-04 12:48:54,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime 16 [2018-10-04 12:48:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-04 12:48:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-04 12:48:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-04 12:48:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-04 12:48:54,428 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-04 12:48:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:54,428 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-04 12:48:54,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 12:48:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-04 12:48:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-04 12:48:54,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:54,429 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-04 12:48:54,429 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:54,429 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-04 12:48:54,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:54,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:54,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:54,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:54,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:54,718 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:54,912 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:55,290 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:56,282 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:48:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:56,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:48:56,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:48:56,895 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:48:57,016 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:48:57,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:48:57,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:48:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:48:57,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:48:57,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 12:48:57,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 12:48:57,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 12:48:57,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:48:57,316 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-04 12:48:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:48:57,968 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 12:48:57,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 12:48:57,968 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-04 12:48:57,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:48:57,969 INFO L225 Difference]: With dead ends: 161 [2018-10-04 12:48:57,969 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 12:48:57,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 17 [2018-10-04 12:48:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 12:48:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 12:48:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 12:48:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-04 12:48:57,973 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-04 12:48:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:48:57,974 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-04 12:48:57,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 12:48:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-04 12:48:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 12:48:57,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:48:57,975 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-04 12:48:57,975 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:48:57,975 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:48:57,975 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-04 12:48:57,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:48:57,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:48:57,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:57,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:48:57,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:48:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:48:58,403 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:48:58,580 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:48:59,121 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:00,316 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:01,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:01,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:01,064 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:49:01,262 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 12:49:01,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:01,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:01,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:01,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 12:49:01,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 12:49:01,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 12:49:01,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:01,545 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-04 12:49:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:01,809 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-04 12:49:01,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 12:49:01,809 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-04 12:49:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:01,810 INFO L225 Difference]: With dead ends: 163 [2018-10-04 12:49:01,810 INFO L226 Difference]: Without dead ends: 161 [2018-10-04 12:49:01,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 18 [2018-10-04 12:49:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-04 12:49:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-04 12:49:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-04 12:49:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-04 12:49:01,814 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-04 12:49:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:01,815 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-04 12:49:01,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 12:49:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-04 12:49:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-04 12:49:01,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:01,816 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-04 12:49:01,816 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:01,816 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:01,816 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-04 12:49:01,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:01,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:01,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:01,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:01,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:02,138 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:02,563 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:03,186 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:03,912 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:04,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:04,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:04,087 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:49:04,341 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 12:49:04,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:04,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:04,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:04,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 12:49:04,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 12:49:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 12:49:04,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:04,649 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-04 12:49:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:04,819 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 12:49:04,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 12:49:04,819 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-04 12:49:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:04,820 INFO L225 Difference]: With dead ends: 165 [2018-10-04 12:49:04,820 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 12:49:04,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 19 [2018-10-04 12:49:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 12:49:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 12:49:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 12:49:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-04 12:49:04,824 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-04 12:49:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:04,824 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-04 12:49:04,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 12:49:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-04 12:49:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 12:49:04,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:04,826 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-04 12:49:04,826 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:04,826 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-04 12:49:04,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:04,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:04,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:05,121 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:05,385 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:05,691 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:06,320 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:06,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:06,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:06,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:07,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:07,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:07,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 12:49:07,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 12:49:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 12:49:07,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:07,390 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-04 12:49:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:07,579 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-04 12:49:07,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 12:49:07,580 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-04 12:49:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:07,580 INFO L225 Difference]: With dead ends: 167 [2018-10-04 12:49:07,580 INFO L226 Difference]: Without dead ends: 165 [2018-10-04 12:49:07,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 20 [2018-10-04 12:49:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-04 12:49:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-04 12:49:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-04 12:49:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-04 12:49:07,584 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-04 12:49:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:07,584 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-04 12:49:07,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 12:49:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-04 12:49:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-04 12:49:07,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:07,586 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-04 12:49:07,586 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:07,586 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-04 12:49:07,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:07,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:07,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:07,968 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:08,289 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:08,603 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:09,868 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:10,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:10,758 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:10,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:49:10,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:49:10,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:10,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:11,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:11,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 12:49:11,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 12:49:11,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 12:49:11,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:11,190 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-04 12:49:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:11,459 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 12:49:11,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 12:49:11,459 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-04 12:49:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:11,460 INFO L225 Difference]: With dead ends: 169 [2018-10-04 12:49:11,460 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 12:49:11,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.7s impTime 21 [2018-10-04 12:49:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 12:49:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 12:49:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 12:49:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-04 12:49:11,462 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-04 12:49:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:11,463 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-04 12:49:11,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 12:49:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-04 12:49:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 12:49:11,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:11,464 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-04 12:49:11,464 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:11,464 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-04 12:49:11,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:11,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:11,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:11,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:11,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:11,784 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:11,957 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:12,315 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:13,357 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:14,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:14,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:14,120 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:49:14,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 12:49:14,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:14,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:14,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:14,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 12:49:14,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 12:49:14,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 12:49:14,840 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:14,840 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-04 12:49:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:15,080 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-04 12:49:15,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 12:49:15,080 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-04 12:49:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:15,081 INFO L225 Difference]: With dead ends: 171 [2018-10-04 12:49:15,081 INFO L226 Difference]: Without dead ends: 169 [2018-10-04 12:49:15,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.8s impTime 22 [2018-10-04 12:49:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-04 12:49:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-04 12:49:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 12:49:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-04 12:49:15,084 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-04 12:49:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:15,084 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-04 12:49:15,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 12:49:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-04 12:49:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 12:49:15,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:15,085 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-04 12:49:15,085 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:15,086 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-04 12:49:15,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:15,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:15,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:15,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:15,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:15,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:15,845 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:16,451 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:16,832 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:17,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:17,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:17,165 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:49:17,294 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:49:17,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:17,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:17,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:17,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 12:49:17,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 12:49:17,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 12:49:17,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:17,596 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-04 12:49:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:17,786 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-04 12:49:17,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 12:49:17,786 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-04 12:49:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:17,787 INFO L225 Difference]: With dead ends: 173 [2018-10-04 12:49:17,787 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 12:49:17,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 23 [2018-10-04 12:49:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 12:49:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 12:49:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 12:49:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-04 12:49:17,790 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-04 12:49:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:17,790 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-04 12:49:17,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 12:49:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-04 12:49:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 12:49:17,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:17,792 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-04 12:49:17,792 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:17,792 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-04 12:49:17,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:17,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:17,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:17,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:17,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:18,075 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:18,395 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:18,926 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:20,159 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:20,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:20,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:20,537 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:49:20,761 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 12:49:20,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:20,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:21,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:21,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 12:49:21,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 12:49:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 12:49:21,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:21,064 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-04 12:49:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:21,263 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-04 12:49:21,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 12:49:21,264 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-04 12:49:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:21,264 INFO L225 Difference]: With dead ends: 175 [2018-10-04 12:49:21,265 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 12:49:21,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 24 [2018-10-04 12:49:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 12:49:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-04 12:49:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 12:49:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-04 12:49:21,268 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-04 12:49:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:21,268 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-04 12:49:21,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 12:49:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-04 12:49:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 12:49:21,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:21,269 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-04 12:49:21,269 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:21,269 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-04 12:49:21,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:21,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:21,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:21,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:21,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:21,504 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:21,701 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:22,008 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:22,565 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:22,793 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:22,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:22,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:22,843 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:49:23,070 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 12:49:23,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:23,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:23,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:23,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 12:49:23,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 12:49:23,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 12:49:23,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:23,377 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-04 12:49:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:23,752 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-04 12:49:23,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 12:49:23,752 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-04 12:49:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:23,753 INFO L225 Difference]: With dead ends: 177 [2018-10-04 12:49:23,753 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 12:49:23,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 8 [2018-10-04 12:49:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 12:49:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 12:49:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 12:49:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-04 12:49:23,756 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-04 12:49:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:23,756 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-04 12:49:23,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 12:49:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-04 12:49:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 12:49:23,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:23,758 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-04 12:49:23,758 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:23,758 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:23,758 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-04 12:49:23,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:23,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:23,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:23,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:23,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:24,019 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:24,238 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:24,681 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:24,982 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:25,274 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:25,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:25,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:25,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:25,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:25,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:25,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 12:49:25,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 12:49:25,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 12:49:25,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:25,758 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-04 12:49:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:25,950 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-04 12:49:25,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 12:49:25,950 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-04 12:49:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:25,951 INFO L225 Difference]: With dead ends: 179 [2018-10-04 12:49:25,951 INFO L226 Difference]: Without dead ends: 177 [2018-10-04 12:49:25,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 8 [2018-10-04 12:49:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-04 12:49:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-04 12:49:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-04 12:49:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-04 12:49:25,955 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-04 12:49:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:25,955 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-04 12:49:25,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 12:49:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-04 12:49:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-04 12:49:25,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:25,956 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-04 12:49:25,956 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:25,957 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:25,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-04 12:49:25,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:25,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:25,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:25,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:25,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:26,256 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:26,398 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:26,659 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:27,094 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:27,646 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:27,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:27,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:27,715 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:49:27,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:49:27,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:27,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:28,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:28,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 12:49:28,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 12:49:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 12:49:28,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:28,169 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-04 12:49:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:28,443 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-04 12:49:28,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 12:49:28,443 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-04 12:49:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:28,444 INFO L225 Difference]: With dead ends: 181 [2018-10-04 12:49:28,444 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 12:49:28,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 9 [2018-10-04 12:49:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 12:49:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 12:49:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 12:49:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-04 12:49:28,447 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-04 12:49:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:28,447 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-04 12:49:28,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 12:49:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-04 12:49:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 12:49:28,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:28,448 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-04 12:49:28,448 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:28,449 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:28,449 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-04 12:49:28,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:28,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:28,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:28,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:28,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:28,866 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:28,997 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:29,215 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:29,963 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:30,681 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:30,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:30,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:30,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:49:31,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 12:49:31,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:31,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:31,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:31,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 12:49:31,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 12:49:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 12:49:31,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:31,400 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-04 12:49:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:31,649 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-04 12:49:31,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 12:49:31,650 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-04 12:49:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:31,650 INFO L225 Difference]: With dead ends: 183 [2018-10-04 12:49:31,650 INFO L226 Difference]: Without dead ends: 181 [2018-10-04 12:49:31,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 11 [2018-10-04 12:49:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-04 12:49:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-04 12:49:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-04 12:49:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-04 12:49:31,654 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-04 12:49:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:31,654 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-04 12:49:31,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 12:49:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-04 12:49:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-04 12:49:31,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:31,655 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-04 12:49:31,655 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:31,656 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-04 12:49:31,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:31,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:31,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:31,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:31,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:31,933 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:32,074 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:32,335 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:32,769 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:33,334 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:33,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:33,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:33,472 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:49:33,611 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:49:33,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:33,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:33,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:33,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 12:49:33,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 12:49:33,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 12:49:33,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:33,933 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-04 12:49:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:34,210 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-04 12:49:34,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 12:49:34,210 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-04 12:49:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:34,211 INFO L225 Difference]: With dead ends: 185 [2018-10-04 12:49:34,211 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 12:49:34,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 11 [2018-10-04 12:49:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 12:49:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 12:49:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 12:49:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-04 12:49:34,214 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-04 12:49:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:34,214 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-04 12:49:34,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 12:49:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-04 12:49:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 12:49:34,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:34,215 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-04 12:49:34,215 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:34,215 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-04 12:49:34,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:34,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:34,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:34,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:34,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:34,481 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:34,699 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:35,299 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:35,481 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:35,772 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:35,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:35,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:35,900 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:49:36,143 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 12:49:36,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:36,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:36,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:36,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 12:49:36,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 12:49:36,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 12:49:36,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:36,466 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-04 12:49:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:36,657 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-04 12:49:36,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 12:49:36,658 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-04 12:49:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:36,659 INFO L225 Difference]: With dead ends: 187 [2018-10-04 12:49:36,659 INFO L226 Difference]: Without dead ends: 185 [2018-10-04 12:49:36,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 12 [2018-10-04 12:49:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-04 12:49:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-04 12:49:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-04 12:49:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-04 12:49:36,663 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-04 12:49:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:36,664 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-04 12:49:36,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 12:49:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-04 12:49:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-04 12:49:36,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:36,665 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-04 12:49:36,665 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:36,665 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:36,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-04 12:49:36,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:36,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:36,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:36,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:36,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:36,911 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:37,106 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:37,410 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:37,952 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:38,180 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:38,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:38,270 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:38,278 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:49:38,526 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-04 12:49:38,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:38,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:38,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:38,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 12:49:38,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 12:49:38,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 12:49:38,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:38,880 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-04 12:49:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:39,106 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-04 12:49:39,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 12:49:39,106 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-04 12:49:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:39,107 INFO L225 Difference]: With dead ends: 189 [2018-10-04 12:49:39,107 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 12:49:39,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 14 [2018-10-04 12:49:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 12:49:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 12:49:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 12:49:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-04 12:49:39,112 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-04 12:49:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:39,112 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-04 12:49:39,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 12:49:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-04 12:49:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 12:49:39,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:39,113 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-04 12:49:39,113 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:39,114 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:39,114 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-04 12:49:39,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:39,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:39,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:39,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:39,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:39,366 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:39,555 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:39,854 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:40,615 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:40,871 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:40,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:40,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:40,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:41,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:41,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:41,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 12:49:41,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 12:49:41,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 12:49:41,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:41,475 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-04 12:49:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:41,688 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-04 12:49:41,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 12:49:41,688 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-04 12:49:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:41,689 INFO L225 Difference]: With dead ends: 191 [2018-10-04 12:49:41,689 INFO L226 Difference]: Without dead ends: 189 [2018-10-04 12:49:41,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 15 [2018-10-04 12:49:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-04 12:49:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-04 12:49:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 12:49:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-04 12:49:41,693 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-04 12:49:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:41,694 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-04 12:49:41,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 12:49:41,694 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-04 12:49:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 12:49:41,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:41,695 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-04 12:49:41,695 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:41,695 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-04 12:49:41,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:41,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:41,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:41,989 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:42,232 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:42,575 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:42,825 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:43,077 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:43,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:43,248 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:43,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:49:43,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:49:43,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:43,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:43,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:43,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 12:49:43,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 12:49:43,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 12:49:43,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:43,737 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-04 12:49:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:43,996 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-04 12:49:43,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 12:49:43,996 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-04 12:49:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:43,998 INFO L225 Difference]: With dead ends: 193 [2018-10-04 12:49:43,998 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 12:49:43,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 16 [2018-10-04 12:49:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 12:49:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 12:49:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 12:49:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-04 12:49:44,002 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-04 12:49:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:44,002 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-04 12:49:44,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 12:49:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-04 12:49:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 12:49:44,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:44,003 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-04 12:49:44,004 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:44,004 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-04 12:49:44,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:44,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:44,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:44,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:44,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:44,359 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:44,475 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:44,686 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:45,188 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:45,863 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:46,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:46,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:46,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:49:46,427 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-04 12:49:46,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:46,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:46,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:46,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 12:49:46,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 12:49:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 12:49:46,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:46,767 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-04 12:49:47,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:47,072 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-04 12:49:47,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 12:49:47,073 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-04 12:49:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:47,073 INFO L225 Difference]: With dead ends: 195 [2018-10-04 12:49:47,073 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 12:49:47,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 16 [2018-10-04 12:49:47,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 12:49:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-04 12:49:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-04 12:49:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-04 12:49:47,077 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-04 12:49:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:47,077 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-04 12:49:47,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 12:49:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-04 12:49:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-04 12:49:47,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:47,078 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-04 12:49:47,078 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:47,078 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-04 12:49:47,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:47,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:47,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:47,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:47,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:47,410 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:47,603 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:47,811 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:48,362 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:49,027 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:49,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:49,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:49,443 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:49:49,590 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:49:49,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:49,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:49,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:49,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 12:49:49,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 12:49:49,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 12:49:49,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:49,985 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-04 12:49:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:50,290 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-04 12:49:50,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 12:49:50,290 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-04 12:49:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:50,291 INFO L225 Difference]: With dead ends: 197 [2018-10-04 12:49:50,291 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 12:49:50,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 17 [2018-10-04 12:49:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 12:49:50,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 12:49:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 12:49:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-04 12:49:50,295 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-04 12:49:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:50,295 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-04 12:49:50,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 12:49:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-04 12:49:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 12:49:50,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:50,296 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-04 12:49:50,296 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:50,296 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-04 12:49:50,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:50,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:50,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:50,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:50,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:50,608 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:50,740 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:50,928 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:51,285 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:51,752 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:52,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:52,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:52,129 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:49:52,405 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-04 12:49:52,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:52,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:52,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:52,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 12:49:52,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 12:49:52,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 12:49:52,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:52,752 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-04 12:49:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:53,074 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-04 12:49:53,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 12:49:53,074 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-04 12:49:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:53,075 INFO L225 Difference]: With dead ends: 199 [2018-10-04 12:49:53,075 INFO L226 Difference]: Without dead ends: 197 [2018-10-04 12:49:53,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 19 [2018-10-04 12:49:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-04 12:49:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-04 12:49:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 12:49:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-04 12:49:53,079 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-04 12:49:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:53,079 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-04 12:49:53,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 12:49:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-04 12:49:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 12:49:53,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:53,080 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-04 12:49:53,080 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:53,081 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-04 12:49:53,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:53,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:53,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:53,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:53,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:53,416 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:53,663 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:54,029 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:54,417 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:54,618 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:54,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:54,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:54,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:49:55,103 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-04 12:49:55,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:49:55,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:55,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:55,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 12:49:55,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 12:49:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 12:49:55,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:55,651 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-04 12:49:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:55,906 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-04 12:49:55,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 12:49:55,907 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-04 12:49:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:55,908 INFO L225 Difference]: With dead ends: 201 [2018-10-04 12:49:55,908 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 12:49:55,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.1s impTime 19 [2018-10-04 12:49:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 12:49:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 12:49:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 12:49:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-04 12:49:55,913 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-04 12:49:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:55,913 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-04 12:49:55,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 12:49:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-04 12:49:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 12:49:55,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:55,914 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-04 12:49:55,914 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:55,915 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-04 12:49:55,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:55,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:55,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:55,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:49:55,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:56,253 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:56,370 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:56,610 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:57,147 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:57,779 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:49:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:57,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:49:57,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:49:57,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:58,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:49:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:49:58,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:49:58,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 12:49:58,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 12:49:58,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 12:49:58,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:49:58,407 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-04 12:49:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:49:58,699 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-04 12:49:58,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 12:49:58,700 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-04 12:49:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:49:58,701 INFO L225 Difference]: With dead ends: 203 [2018-10-04 12:49:58,701 INFO L226 Difference]: Without dead ends: 201 [2018-10-04 12:49:58,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 20 [2018-10-04 12:49:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-04 12:49:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-04 12:49:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-04 12:49:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-04 12:49:58,704 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-04 12:49:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:49:58,704 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-04 12:49:58,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 12:49:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-04 12:49:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-04 12:49:58,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:49:58,705 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-04 12:49:58,705 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:49:58,705 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:49:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-04 12:49:58,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:49:58,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:49:58,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:58,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:49:58,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:49:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:49:58,994 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:49:59,121 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:59,345 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:49:59,910 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:00,723 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:00,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:00,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:00,908 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:50:01,065 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:50:01,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:01,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:01,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:01,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 12:50:01,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 12:50:01,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 12:50:01,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:01,423 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-04 12:50:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:01,735 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-04 12:50:01,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 12:50:01,736 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-04 12:50:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:01,737 INFO L225 Difference]: With dead ends: 205 [2018-10-04 12:50:01,737 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 12:50:01,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 22 [2018-10-04 12:50:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 12:50:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 12:50:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 12:50:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-04 12:50:01,740 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-04 12:50:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:01,740 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-04 12:50:01,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 12:50:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-04 12:50:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 12:50:01,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:01,741 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-04 12:50:01,741 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:01,741 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:01,741 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-04 12:50:01,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:01,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:01,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:01,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:01,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:02,025 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:02,214 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:02,511 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:03,051 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:03,302 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:03,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:03,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:03,543 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:50:03,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-04 12:50:03,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:03,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:04,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:04,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 12:50:04,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 12:50:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 12:50:04,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:04,203 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-04 12:50:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:04,471 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-04 12:50:04,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 12:50:04,471 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-04 12:50:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:04,472 INFO L225 Difference]: With dead ends: 207 [2018-10-04 12:50:04,472 INFO L226 Difference]: Without dead ends: 205 [2018-10-04 12:50:04,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 23 [2018-10-04 12:50:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-04 12:50:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-04 12:50:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-04 12:50:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-04 12:50:04,476 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-04 12:50:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:04,476 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-04 12:50:04,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 12:50:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-04 12:50:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-04 12:50:04,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:04,477 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-04 12:50:04,477 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:04,477 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-04 12:50:04,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:04,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:04,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:04,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:04,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:04,929 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:05,164 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:05,321 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:05,742 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:06,195 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:06,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:06,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:06,655 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:50:06,814 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:50:06,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:06,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:07,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:07,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 12:50:07,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 12:50:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 12:50:07,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:07,208 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-04 12:50:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:07,497 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-04 12:50:07,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 12:50:07,497 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-04 12:50:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:07,498 INFO L225 Difference]: With dead ends: 209 [2018-10-04 12:50:07,498 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 12:50:07,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.4s impTime 24 [2018-10-04 12:50:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 12:50:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 12:50:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 12:50:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-04 12:50:07,502 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-04 12:50:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:07,503 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-04 12:50:07,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 12:50:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-04 12:50:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 12:50:07,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:07,504 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-04 12:50:07,505 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:07,505 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-04 12:50:07,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:07,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:07,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:07,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:07,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:07,809 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:08,029 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:08,371 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:08,911 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:09,602 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:10,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:10,326 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:10,333 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:50:10,765 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-04 12:50:10,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:10,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:11,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:11,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 12:50:11,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 12:50:11,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 12:50:11,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:11,410 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-04 12:50:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:11,816 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-04 12:50:11,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 12:50:11,817 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-04 12:50:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:11,818 INFO L225 Difference]: With dead ends: 211 [2018-10-04 12:50:11,818 INFO L226 Difference]: Without dead ends: 209 [2018-10-04 12:50:11,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.2s impTime 24 [2018-10-04 12:50:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-04 12:50:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-04 12:50:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-04 12:50:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-04 12:50:11,821 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-04 12:50:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:11,821 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-04 12:50:11,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 12:50:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-04 12:50:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-04 12:50:11,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:11,822 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-04 12:50:11,822 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:11,822 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-04 12:50:11,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:11,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:11,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:11,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:11,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:12,160 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:12,382 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:12,669 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:12,857 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:13,177 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:13,800 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:13,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:13,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:13,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:50:14,147 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-04 12:50:14,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:14,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:14,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:14,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 12:50:14,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 12:50:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 12:50:14,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:14,518 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-04 12:50:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:14,852 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-04 12:50:14,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 12:50:14,852 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-04 12:50:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:14,853 INFO L225 Difference]: With dead ends: 213 [2018-10-04 12:50:14,853 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 12:50:14,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 8 [2018-10-04 12:50:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 12:50:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 12:50:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 12:50:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-04 12:50:14,857 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-04 12:50:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:14,857 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-04 12:50:14,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 12:50:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-04 12:50:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 12:50:14,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:14,858 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-04 12:50:14,859 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:14,859 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:14,859 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-04 12:50:14,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:14,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:14,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:14,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:14,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:15,195 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:15,337 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:15,557 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:16,266 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:16,919 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:17,180 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:17,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:17,237 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:17,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:50:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:17,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:17,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:17,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 12:50:17,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 12:50:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 12:50:17,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:17,806 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-04 12:50:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:18,140 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-04 12:50:18,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 12:50:18,140 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-04 12:50:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:18,141 INFO L225 Difference]: With dead ends: 215 [2018-10-04 12:50:18,141 INFO L226 Difference]: Without dead ends: 213 [2018-10-04 12:50:18,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 10 [2018-10-04 12:50:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-04 12:50:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-04 12:50:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-04 12:50:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-04 12:50:18,145 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-04 12:50:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:18,145 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-04 12:50:18,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 12:50:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-04 12:50:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-04 12:50:18,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:18,146 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-04 12:50:18,146 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:18,146 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-04 12:50:18,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:18,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:18,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:18,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:50:18,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:18,496 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:18,718 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:19,077 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:19,631 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:20,297 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:21,363 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:21,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:21,499 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:21,506 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:50:21,672 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:50:21,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:21,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:22,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:22,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 12:50:22,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 12:50:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 12:50:22,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:22,089 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-04 12:50:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:22,544 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-04 12:50:22,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 12:50:22,544 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-04 12:50:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:22,545 INFO L225 Difference]: With dead ends: 217 [2018-10-04 12:50:22,545 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 12:50:22,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.6s impTime 10 [2018-10-04 12:50:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 12:50:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 12:50:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 12:50:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-04 12:50:22,549 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-04 12:50:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:22,549 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-04 12:50:22,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 12:50:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-04 12:50:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 12:50:22,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:22,550 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-04 12:50:22,550 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:22,551 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:22,551 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-04 12:50:22,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:22,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:22,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:22,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:22,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:22,893 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:23,111 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:23,450 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:23,988 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:24,680 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:25,478 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:25,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:25,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:25,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:50:26,006 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-04 12:50:26,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:26,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:26,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:26,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 12:50:26,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 12:50:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 12:50:26,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:26,570 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-04 12:50:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:27,042 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-04 12:50:27,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 12:50:27,042 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-04 12:50:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:27,043 INFO L225 Difference]: With dead ends: 219 [2018-10-04 12:50:27,043 INFO L226 Difference]: Without dead ends: 217 [2018-10-04 12:50:27,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.4s impTime 11 [2018-10-04 12:50:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-04 12:50:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-04 12:50:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-04 12:50:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-04 12:50:27,047 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-04 12:50:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:27,047 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-04 12:50:27,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 12:50:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-04 12:50:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-04 12:50:27,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:27,048 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-04 12:50:27,048 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:27,049 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-04 12:50:27,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:27,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:27,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:27,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:27,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:27,384 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:27,619 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:27,830 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:28,376 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:29,032 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:29,829 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:30,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:30,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:30,123 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:50:30,292 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:50:30,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:30,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:30,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:30,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 12:50:30,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 12:50:30,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 12:50:30,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:30,679 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-04 12:50:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:31,163 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-04 12:50:31,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 12:50:31,164 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-04 12:50:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:31,164 INFO L225 Difference]: With dead ends: 221 [2018-10-04 12:50:31,164 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 12:50:31,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 13 [2018-10-04 12:50:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 12:50:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 12:50:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 12:50:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-04 12:50:31,167 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-04 12:50:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:31,168 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-04 12:50:31,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 12:50:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-04 12:50:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 12:50:31,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:31,169 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-04 12:50:31,169 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:31,169 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-04 12:50:31,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:31,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:31,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:31,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:31,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:31,561 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:31,750 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:32,047 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:32,585 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:32,835 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:33,099 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:33,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:33,248 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:33,255 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:50:33,587 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-04 12:50:33,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:33,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:33,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:33,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 12:50:33,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 12:50:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 12:50:33,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:33,977 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-04 12:50:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:34,280 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-04 12:50:34,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 12:50:34,280 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-04 12:50:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:34,281 INFO L225 Difference]: With dead ends: 223 [2018-10-04 12:50:34,281 INFO L226 Difference]: Without dead ends: 221 [2018-10-04 12:50:34,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 14 [2018-10-04 12:50:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-04 12:50:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-04 12:50:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 12:50:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-04 12:50:34,285 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-04 12:50:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:34,285 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-04 12:50:34,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 12:50:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-04 12:50:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 12:50:34,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:34,286 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-04 12:50:34,287 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:34,287 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:34,287 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-04 12:50:34,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:34,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:34,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:34,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:34,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:34,637 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:34,839 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:35,030 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:35,391 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:35,874 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:36,838 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:37,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:37,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:37,227 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:50:37,558 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-04 12:50:37,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:37,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:37,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:37,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 12:50:37,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 12:50:37,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 12:50:37,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:37,949 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-04 12:50:38,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:38,388 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-04 12:50:38,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 12:50:38,388 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-04 12:50:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:38,389 INFO L225 Difference]: With dead ends: 225 [2018-10-04 12:50:38,389 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 12:50:38,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime 15 [2018-10-04 12:50:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 12:50:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 12:50:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 12:50:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-04 12:50:38,392 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-04 12:50:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:38,392 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-04 12:50:38,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 12:50:38,392 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-04 12:50:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 12:50:38,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:38,393 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-04 12:50:38,393 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:38,393 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-04 12:50:38,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:38,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:38,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:38,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:38,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:38,739 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:38,855 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:39,092 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:39,696 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:40,312 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:40,788 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:41,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:41,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:41,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:50:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:41,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:41,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:41,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 12:50:41,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 12:50:41,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 12:50:41,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:41,979 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-04 12:50:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:42,421 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-04 12:50:42,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 12:50:42,422 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-04 12:50:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:42,422 INFO L225 Difference]: With dead ends: 227 [2018-10-04 12:50:42,422 INFO L226 Difference]: Without dead ends: 225 [2018-10-04 12:50:42,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.1s impTime 15 [2018-10-04 12:50:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-04 12:50:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-04 12:50:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-04 12:50:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-04 12:50:42,425 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-04 12:50:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:42,425 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-04 12:50:42,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 12:50:42,426 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-04 12:50:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-04 12:50:42,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:42,426 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-04 12:50:42,426 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:42,427 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:42,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-04 12:50:42,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:42,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:42,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:42,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:50:42,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:42,788 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:43,036 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:43,404 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:44,031 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:44,693 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:45,492 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:45,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:50:45,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:50:45,939 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:50:46,115 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:50:46,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:50:46,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:50:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:50:46,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:50:46,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 12:50:46,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 12:50:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 12:50:46,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:50:46,534 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-04 12:50:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:50:47,013 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-04 12:50:47,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 12:50:47,013 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-04 12:50:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:50:47,014 INFO L225 Difference]: With dead ends: 229 [2018-10-04 12:50:47,014 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 12:50:47,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 16 [2018-10-04 12:50:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 12:50:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 12:50:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 12:50:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-04 12:50:47,017 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-04 12:50:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:50:47,017 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-04 12:50:47,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 12:50:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-04 12:50:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 12:50:47,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:50:47,018 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-04 12:50:47,018 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:50:47,018 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:50:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-04 12:50:47,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:50:47,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:50:47,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:47,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:50:47,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:50:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:50:47,396 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:50:47,525 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:47,710 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:50:48,068 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:50:48,613 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 12:50:49,129 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:50:49,133 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:50:49,133 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:50:49 BoogieIcfgContainer [2018-10-04 12:50:49,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:50:49,134 INFO L168 Benchmark]: Toolchain (without parser) took 233834.01 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 575.7 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -323.7 MB). Peak memory consumption was 252.0 MB. Max. memory is 7.1 GB. [2018-10-04 12:50:49,136 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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 12:50:49,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.61 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 12:50:49,138 INFO L168 Benchmark]: Boogie Preprocessor took 19.78 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 12:50:49,138 INFO L168 Benchmark]: RCFGBuilder took 272.73 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 12:50:49,139 INFO L168 Benchmark]: TraceAbstraction took 233497.93 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 575.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -344.8 MB). Peak memory consumption was 230.8 MB. Max. memory is 7.1 GB. [2018-10-04 12:50:49,141 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 0.20 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 39.61 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 19.78 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 272.73 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 233497.93 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 575.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -344.8 MB). Peak memory consumption was 230.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 227 with TraceHistMax 112, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 225 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 233.4s OverallTime, 112 OverallIterations, 112 TraceHistogramMax, 20.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 444 SDtfs, 0 SDslu, 9551 SDs, 0 SdLazy, 9662 SolverSat, 202 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18867 GetRequests, 12651 SyntacticMatches, 0 SemanticMatches, 6216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 111 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 17.3s SatisfiabilityAnalysisTime, 185.4s InterpolantComputationTime, 25304 NumberOfCodeBlocks, 25304 NumberOfCodeBlocksAsserted, 3264 NumberOfCheckSat, 25083 ConstructedInterpolants, 0 QuantifiedInterpolants, 11189001 SizeOfPredicates, 329 NumberOfNonLiveVariables, 74910 ConjunctsInSsa, 6871 ConjunctsInUnsatCore, 221 InterpolantComputations, 1 PerfectInterpolantSequences, 0/911680 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_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-50-49-151.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-50-49-151.csv Completed graceful shutdown