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/real-life/RailwayCrossing.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:34:07,506 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:34:07,508 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:34:07,520 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:34:07,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:34:07,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:34:07,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:34:07,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:34:07,527 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:34:07,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:34:07,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-30 20:34:07,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-30 20:34:07,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-30 20:34:07,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-30 20:34:07,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-30 20:34:07,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-30 20:34:07,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-30 20:34:07,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-30 20:34:07,539 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-30 20:34:07,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-30 20:34:07,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-30 20:34:07,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-30 20:34:07,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-30 20:34:07,546 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-30 20:34:07,547 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-30 20:34:07,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-30 20:34:07,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-30 20:34:07,550 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-30 20:34:07,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-30 20:34:07,552 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-30 20:34:07,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-30 20:34:07,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-30 20:34:07,553 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-30 20:34:07,553 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-30 20:34:07,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-30 20:34:07,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-30 20:34:07,556 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 20:34:07,571 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:34:07,572 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:34:07,573 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:34:07,573 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:34:07,573 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:34:07,574 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:34:07,574 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:34:07,574 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:34:07,574 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:34:07,575 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:34:07,576 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:34:07,576 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:34:07,576 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:34:07,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:34:07,577 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:34:07,577 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:34:07,577 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:34:07,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:34:07,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:34:07,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:34:07,579 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:34:07,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:34:07,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:34:07,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:34:07,646 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:34:07,647 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:34:07,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-09-30 20:34:07,648 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-09-30 20:34:07,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:34:07,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:34:07,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:34:07,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:34:07,702 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:34:07,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,742 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 20:34:07,742 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 20:34:07,743 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 20:34:07,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:34:07,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:34:07,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:34:07,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:34:07,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:34:07,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:34:07,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:34:07,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:34:07,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:34:07,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-30 20:34:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-30 20:34:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-30 20:34:08,184 INFO L345 CfgBuilder]: Using library mode [2018-09-30 20:34:08,185 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:34:08 BoogieIcfgContainer [2018-09-30 20:34:08,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:34:08,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:34:08,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:34:08,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:34:08,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/2) ... [2018-09-30 20:34:08,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d6ba92 and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:34:08, skipping insertion in model container [2018-09-30 20:34:08,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:34:08" (2/2) ... [2018-09-30 20:34:08,198 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-09-30 20:34:08,208 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:34:08,221 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:34:08,269 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:34:08,270 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:34:08,270 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:34:08,271 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:34:08,271 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:34:08,271 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:34:08,271 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:34:08,271 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:34:08,272 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:34:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 20:34:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 20:34:08,293 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:08,294 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 20:34:08,295 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:08,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-09-30 20:34:08,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:08,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:08,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:08,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:34:08,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:34:08,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:34:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:34:08,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:08,501 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 20:34:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:08,720 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-09-30 20:34:08,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:34:08,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 20:34:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:08,734 INFO L225 Difference]: With dead ends: 19 [2018-09-30 20:34:08,735 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 20:34:08,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:34:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 20:34:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 20:34:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:34:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2018-09-30 20:34:08,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 3 [2018-09-30 20:34:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:08,769 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-09-30 20:34:08,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:34:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2018-09-30 20:34:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 20:34:08,770 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:08,770 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:34:08,771 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:08,771 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:08,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1863215691, now seen corresponding path program 1 times [2018-09-30 20:34:08,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:08,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:08,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:08,823 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:34:08,823 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:34:08,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:34:08,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:34:08,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:08,826 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2018-09-30 20:34:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:08,854 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-09-30 20:34:08,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:34:08,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-30 20:34:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:08,855 INFO L225 Difference]: With dead ends: 16 [2018-09-30 20:34:08,855 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 20:34:08,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:34:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 20:34:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 20:34:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:34:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-30 20:34:08,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-09-30 20:34:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:08,860 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-30 20:34:08,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:34:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-30 20:34:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:34:08,861 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:08,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:34:08,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:08,862 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1926837521, now seen corresponding path program 1 times [2018-09-30 20:34:08,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:08,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:08,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:08,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:08,967 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:08,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:09,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:09,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:09,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-09-30 20:34:09,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:34:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:34:09,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:09,414 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-09-30 20:34:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:09,839 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-09-30 20:34:09,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:34:09,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-09-30 20:34:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:09,842 INFO L225 Difference]: With dead ends: 20 [2018-09-30 20:34:09,842 INFO L226 Difference]: Without dead ends: 18 [2018-09-30 20:34:09,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:34:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-30 20:34:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-09-30 20:34:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 20:34:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-30 20:34:09,850 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-30 20:34:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:09,851 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-30 20:34:09,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:34:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-30 20:34:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 20:34:09,852 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:09,853 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-30 20:34:09,854 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:09,854 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 640583104, now seen corresponding path program 2 times [2018-09-30 20:34:09,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:09,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:09,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:09,940 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:09,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:09,973 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:09,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:09,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:10,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:10,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-30 20:34:10,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:34:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:34:10,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:10,174 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 8 states. [2018-09-30 20:34:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:10,419 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2018-09-30 20:34:10,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:34:10,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-09-30 20:34:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:10,420 INFO L225 Difference]: With dead ends: 25 [2018-09-30 20:34:10,420 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 20:34:10,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:34:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 20:34:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-30 20:34:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 20:34:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-09-30 20:34:10,425 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2018-09-30 20:34:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:10,426 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-09-30 20:34:10,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:34:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-09-30 20:34:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:34:10,427 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:10,427 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-30 20:34:10,427 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:10,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash -297055631, now seen corresponding path program 3 times [2018-09-30 20:34:10,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:10,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:10,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:10,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:10,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:10,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:10,532 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:10,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:10,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 20:34:10,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:10,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:10,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:10,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-09-30 20:34:10,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:34:10,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:34:10,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:10,856 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 10 states. [2018-09-30 20:34:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:11,521 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2018-09-30 20:34:11,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:34:11,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-30 20:34:11,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:11,523 INFO L225 Difference]: With dead ends: 30 [2018-09-30 20:34:11,523 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 20:34:11,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:34:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 20:34:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-30 20:34:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 20:34:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2018-09-30 20:34:11,529 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 18 [2018-09-30 20:34:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:11,529 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2018-09-30 20:34:11,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:34:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2018-09-30 20:34:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 20:34:11,531 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:11,531 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-30 20:34:11,531 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:11,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2073218144, now seen corresponding path program 4 times [2018-09-30 20:34:11,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:11,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:11,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:11,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:11,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:11,670 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:11,670 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:11,678 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:11,694 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:11,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:11,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:12,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:12,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 20:34:12,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:34:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:34:12,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:12,064 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 12 states. [2018-09-30 20:34:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:12,193 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2018-09-30 20:34:12,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:34:12,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-09-30 20:34:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:12,195 INFO L225 Difference]: With dead ends: 35 [2018-09-30 20:34:12,196 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 20:34:12,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:34:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 20:34:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-30 20:34:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 20:34:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2018-09-30 20:34:12,202 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 23 [2018-09-30 20:34:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:12,203 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2018-09-30 20:34:12,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:34:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2018-09-30 20:34:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 20:34:12,204 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:12,204 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-30 20:34:12,204 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:12,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash -609605679, now seen corresponding path program 5 times [2018-09-30 20:34:12,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:12,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:12,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:12,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:12,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:12,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:12,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:12,344 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:12,363 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 20:34:12,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:12,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:12,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:12,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 20:34:12,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:34:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:34:12,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:12,895 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 14 states. [2018-09-30 20:34:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:13,218 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2018-09-30 20:34:13,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:34:13,220 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-09-30 20:34:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:13,221 INFO L225 Difference]: With dead ends: 40 [2018-09-30 20:34:13,221 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 20:34:13,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:34:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 20:34:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-30 20:34:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 20:34:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-09-30 20:34:13,227 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 28 [2018-09-30 20:34:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:13,228 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2018-09-30 20:34:13,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:34:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2018-09-30 20:34:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 20:34:13,229 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:13,229 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-30 20:34:13,229 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:13,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:13,230 INFO L82 PathProgramCache]: Analyzing trace with hash -70825216, now seen corresponding path program 6 times [2018-09-30 20:34:13,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:13,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:13,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:13,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:13,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:13,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:13,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:13,379 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:13,395 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 20:34:13,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:13,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:13,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:13,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 20:34:13,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:34:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:34:13,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:13,816 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand 16 states. [2018-09-30 20:34:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:14,059 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2018-09-30 20:34:14,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:34:14,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-09-30 20:34:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:14,061 INFO L225 Difference]: With dead ends: 45 [2018-09-30 20:34:14,062 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:34:14,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:34:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-30 20:34:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 20:34:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2018-09-30 20:34:14,069 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 33 [2018-09-30 20:34:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:14,069 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-09-30 20:34:14,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:34:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2018-09-30 20:34:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 20:34:14,071 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:14,071 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-30 20:34:14,071 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:14,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481585, now seen corresponding path program 7 times [2018-09-30 20:34:14,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:14,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:14,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:14,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:14,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:14,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:14,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:14,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:14,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:14,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-09-30 20:34:14,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:34:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:34:14,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:14,617 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 18 states. [2018-09-30 20:34:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:14,972 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-09-30 20:34:14,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:34:14,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-09-30 20:34:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:14,974 INFO L225 Difference]: With dead ends: 50 [2018-09-30 20:34:14,974 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 20:34:14,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:34:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 20:34:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-30 20:34:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 20:34:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-09-30 20:34:14,980 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 38 [2018-09-30 20:34:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:14,981 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-09-30 20:34:14,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:34:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-09-30 20:34:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 20:34:14,982 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:14,983 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-30 20:34:14,983 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:14,983 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:14,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1776681376, now seen corresponding path program 8 times [2018-09-30 20:34:14,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:14,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:14,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:14,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:15,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:15,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:15,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:15,172 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:15,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:15,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:15,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:15,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 20:34:15,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:34:15,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:34:15,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:15,577 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 20 states. [2018-09-30 20:34:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:15,778 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2018-09-30 20:34:15,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:34:15,778 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2018-09-30 20:34:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:15,779 INFO L225 Difference]: With dead ends: 55 [2018-09-30 20:34:15,779 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 20:34:15,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 20:34:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-30 20:34:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 20:34:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2018-09-30 20:34:15,788 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 43 [2018-09-30 20:34:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:15,789 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2018-09-30 20:34:15,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:34:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2018-09-30 20:34:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 20:34:15,790 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:15,790 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-30 20:34:15,791 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:15,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash -951698799, now seen corresponding path program 9 times [2018-09-30 20:34:15,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:15,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:15,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:15,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:15,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:15,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:15,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:15,960 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 20:34:15,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:15,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:17,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:17,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-09-30 20:34:17,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:34:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:34:17,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:17,527 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand 22 states. [2018-09-30 20:34:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:17,802 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2018-09-30 20:34:17,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:34:17,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2018-09-30 20:34:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:17,804 INFO L225 Difference]: With dead ends: 60 [2018-09-30 20:34:17,804 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 20:34:17,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:34:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 20:34:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-30 20:34:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 20:34:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2018-09-30 20:34:17,812 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 48 [2018-09-30 20:34:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:17,813 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2018-09-30 20:34:17,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:34:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2018-09-30 20:34:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 20:34:17,814 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:17,814 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-30 20:34:17,814 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:17,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -259461056, now seen corresponding path program 10 times [2018-09-30 20:34:17,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:17,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:17,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:17,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:17,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:17,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:17,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:17,965 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:17,981 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:17,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:17,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:18,583 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:18,583 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-30 20:34:18,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:34:18,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:34:18,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:18,584 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 24 states. [2018-09-30 20:34:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:18,863 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-09-30 20:34:18,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:34:18,864 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-09-30 20:34:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:18,865 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:34:18,865 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:34:18,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:34:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:34:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-30 20:34:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 20:34:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2018-09-30 20:34:18,872 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 53 [2018-09-30 20:34:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:18,872 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2018-09-30 20:34:18,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:34:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2018-09-30 20:34:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 20:34:18,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:18,873 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-30 20:34:18,874 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:18,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1213165553, now seen corresponding path program 11 times [2018-09-30 20:34:18,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:18,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:18,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:18,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:18,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:19,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:19,003 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:19,010 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:19,043 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 20:34:19,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:19,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:20,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:20,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2018-09-30 20:34:20,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 20:34:20,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 20:34:20,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:20,081 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand 26 states. [2018-09-30 20:34:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:20,291 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2018-09-30 20:34:20,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:34:20,291 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2018-09-30 20:34:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:20,292 INFO L225 Difference]: With dead ends: 70 [2018-09-30 20:34:20,292 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 20:34:20,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:34:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 20:34:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-30 20:34:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 20:34:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2018-09-30 20:34:20,300 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 58 [2018-09-30 20:34:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:20,301 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2018-09-30 20:34:20,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 20:34:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2018-09-30 20:34:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 20:34:20,302 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:20,302 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-30 20:34:20,302 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:20,303 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1043720480, now seen corresponding path program 12 times [2018-09-30 20:34:20,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:20,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:20,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:20,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:20,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:20,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:20,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:20,692 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:20,718 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 20:34:20,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:20,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:21,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:21,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-30 20:34:21,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:34:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:34:21,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:21,127 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 28 states. [2018-09-30 20:34:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:21,438 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-09-30 20:34:21,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:34:21,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2018-09-30 20:34:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:21,439 INFO L225 Difference]: With dead ends: 75 [2018-09-30 20:34:21,440 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 20:34:21,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:34:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 20:34:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-30 20:34:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 20:34:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2018-09-30 20:34:21,446 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 63 [2018-09-30 20:34:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:21,446 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2018-09-30 20:34:21,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:34:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2018-09-30 20:34:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 20:34:21,448 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:21,448 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-30 20:34:21,448 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:21,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash 14511441, now seen corresponding path program 13 times [2018-09-30 20:34:21,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:21,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:21,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:21,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:21,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:21,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:21,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:22,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:22,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2018-09-30 20:34:22,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 20:34:22,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 20:34:22,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:22,396 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand 30 states. [2018-09-30 20:34:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:22,682 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2018-09-30 20:34:22,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:34:22,682 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2018-09-30 20:34:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:22,683 INFO L225 Difference]: With dead ends: 80 [2018-09-30 20:34:22,683 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 20:34:22,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 20:34:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-30 20:34:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 20:34:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2018-09-30 20:34:22,691 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 68 [2018-09-30 20:34:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:22,691 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2018-09-30 20:34:22,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 20:34:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2018-09-30 20:34:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 20:34:22,693 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:22,693 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-30 20:34:22,693 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:22,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:22,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1220315776, now seen corresponding path program 14 times [2018-09-30 20:34:22,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:22,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:22,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:22,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:22,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:23,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:23,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:23,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:23,836 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:23,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:23,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:24,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:24,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-30 20:34:24,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:34:24,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:34:24,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:24,282 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 32 states. [2018-09-30 20:34:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:24,528 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2018-09-30 20:34:24,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:34:24,528 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2018-09-30 20:34:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:24,529 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:34:24,529 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 20:34:24,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:34:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 20:34:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-30 20:34:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 20:34:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2018-09-30 20:34:24,535 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 73 [2018-09-30 20:34:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:24,535 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2018-09-30 20:34:24,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:34:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2018-09-30 20:34:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 20:34:24,539 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:24,539 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-30 20:34:24,539 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:24,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:24,539 INFO L82 PathProgramCache]: Analyzing trace with hash 127283889, now seen corresponding path program 15 times [2018-09-30 20:34:24,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:24,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:24,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:24,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:24,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:24,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:24,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:24,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:24,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 20:34:24,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:24,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:25,301 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:25,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-09-30 20:34:25,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 20:34:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 20:34:25,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:25,302 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand 34 states. [2018-09-30 20:34:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:25,594 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2018-09-30 20:34:25,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 20:34:25,595 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-30 20:34:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:25,596 INFO L225 Difference]: With dead ends: 90 [2018-09-30 20:34:25,596 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 20:34:25,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 20:34:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-30 20:34:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 20:34:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2018-09-30 20:34:25,602 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 78 [2018-09-30 20:34:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:25,602 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2018-09-30 20:34:25,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 20:34:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2018-09-30 20:34:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 20:34:25,603 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:25,603 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-30 20:34:25,603 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:25,604 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -233894880, now seen corresponding path program 16 times [2018-09-30 20:34:25,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:25,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:25,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:25,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:25,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:25,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:25,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:25,754 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:25,776 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:25,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:25,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:26,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:26,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-30 20:34:26,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:34:26,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:34:26,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:26,274 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 36 states. [2018-09-30 20:34:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:26,727 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2018-09-30 20:34:26,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:34:26,727 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2018-09-30 20:34:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:26,728 INFO L225 Difference]: With dead ends: 95 [2018-09-30 20:34:26,728 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:34:26,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:34:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-30 20:34:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 20:34:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-09-30 20:34:26,734 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 83 [2018-09-30 20:34:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:26,734 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-09-30 20:34:26,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:34:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-09-30 20:34:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 20:34:26,736 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:26,736 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-30 20:34:26,736 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:26,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash -610287599, now seen corresponding path program 17 times [2018-09-30 20:34:26,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:26,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:26,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:26,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:26,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:27,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:27,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:27,021 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:27,059 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 20:34:27,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:27,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:27,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:27,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-09-30 20:34:27,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 20:34:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 20:34:27,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:27,845 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 38 states. [2018-09-30 20:34:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:28,158 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2018-09-30 20:34:28,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:34:28,158 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 88 [2018-09-30 20:34:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:28,159 INFO L225 Difference]: With dead ends: 100 [2018-09-30 20:34:28,159 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 20:34:28,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 20:34:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-30 20:34:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 20:34:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2018-09-30 20:34:28,164 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 88 [2018-09-30 20:34:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:28,165 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-09-30 20:34:28,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 20:34:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2018-09-30 20:34:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 20:34:28,166 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:28,166 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-30 20:34:28,166 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:28,167 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2059852480, now seen corresponding path program 18 times [2018-09-30 20:34:28,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:28,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:28,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:28,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:28,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:28,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:28,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:28,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:28,457 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 20:34:28,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:28,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:29,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:29,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-30 20:34:29,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:34:29,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:34:29,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:29,101 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand 40 states. [2018-09-30 20:34:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:29,488 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2018-09-30 20:34:29,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:34:29,488 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-09-30 20:34:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:29,490 INFO L225 Difference]: With dead ends: 105 [2018-09-30 20:34:29,490 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 20:34:29,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:34:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 20:34:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-30 20:34:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 20:34:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2018-09-30 20:34:29,495 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 93 [2018-09-30 20:34:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:29,495 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2018-09-30 20:34:29,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:34:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2018-09-30 20:34:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 20:34:29,496 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:29,496 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-30 20:34:29,496 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:29,496 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash -996141711, now seen corresponding path program 19 times [2018-09-30 20:34:29,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:29,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:29,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:29,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:29,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:29,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:29,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:29,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:29,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:30,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:30,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2018-09-30 20:34:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 20:34:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 20:34:30,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:30,448 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand 42 states. [2018-09-30 20:34:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:30,816 INFO L93 Difference]: Finished difference Result 110 states and 152 transitions. [2018-09-30 20:34:30,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:34:30,816 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 98 [2018-09-30 20:34:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:30,817 INFO L225 Difference]: With dead ends: 110 [2018-09-30 20:34:30,817 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 20:34:30,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 20:34:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-30 20:34:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 20:34:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2018-09-30 20:34:30,822 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 98 [2018-09-30 20:34:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:30,822 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2018-09-30 20:34:30,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 20:34:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2018-09-30 20:34:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 20:34:30,823 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:30,823 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-30 20:34:30,824 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:30,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:30,824 INFO L82 PathProgramCache]: Analyzing trace with hash -511385248, now seen corresponding path program 20 times [2018-09-30 20:34:30,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:30,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:30,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:30,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:30,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:31,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:31,014 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:31,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:31,051 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:31,052 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:31,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:33,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:33,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-30 20:34:33,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:34:33,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:34:33,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:33,305 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand 44 states. [2018-09-30 20:34:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:33,739 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2018-09-30 20:34:33,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:34:33,740 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 103 [2018-09-30 20:34:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:33,741 INFO L225 Difference]: With dead ends: 115 [2018-09-30 20:34:33,741 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 20:34:33,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:34:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 20:34:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-30 20:34:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 20:34:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2018-09-30 20:34:33,746 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 103 [2018-09-30 20:34:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:33,746 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2018-09-30 20:34:33,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:34:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2018-09-30 20:34:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 20:34:33,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:33,747 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-30 20:34:33,747 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:33,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash 851260113, now seen corresponding path program 21 times [2018-09-30 20:34:33,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:33,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:33,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:33,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:33,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:34,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:34,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:34,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:34,888 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 20:34:34,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:34,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:35,525 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:35,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2018-09-30 20:34:35,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 20:34:35,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 20:34:35,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:35,526 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 46 states. [2018-09-30 20:34:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:35,987 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2018-09-30 20:34:35,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:34:35,987 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 108 [2018-09-30 20:34:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:35,988 INFO L225 Difference]: With dead ends: 120 [2018-09-30 20:34:35,988 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 20:34:35,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:34:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 20:34:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-30 20:34:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 20:34:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2018-09-30 20:34:35,993 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 108 [2018-09-30 20:34:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:35,993 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2018-09-30 20:34:35,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 20:34:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2018-09-30 20:34:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 20:34:35,994 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:35,994 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-30 20:34:35,995 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:35,995 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash -572317696, now seen corresponding path program 22 times [2018-09-30 20:34:35,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:35,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:35,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:35,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:35,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:36,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:36,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:36,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:36,332 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:36,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:36,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:37,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:37,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-30 20:34:37,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:34:37,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:34:37,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:37,005 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand 48 states. [2018-09-30 20:34:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:37,573 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2018-09-30 20:34:37,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:34:37,574 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 113 [2018-09-30 20:34:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:37,574 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:34:37,574 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:34:37,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:34:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-30 20:34:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 20:34:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2018-09-30 20:34:37,580 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 113 [2018-09-30 20:34:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:37,580 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2018-09-30 20:34:37,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:34:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2018-09-30 20:34:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 20:34:37,581 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:37,581 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-30 20:34:37,581 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:37,581 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 513611825, now seen corresponding path program 23 times [2018-09-30 20:34:37,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:37,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:37,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:37,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:37,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:37,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:37,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:38,000 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:38,044 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 20:34:38,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:38,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:38,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:38,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2018-09-30 20:34:38,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 20:34:38,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 20:34:38,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:38,685 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 50 states. [2018-09-30 20:34:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:39,047 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2018-09-30 20:34:39,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 20:34:39,047 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 118 [2018-09-30 20:34:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:39,048 INFO L225 Difference]: With dead ends: 130 [2018-09-30 20:34:39,048 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 20:34:39,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:34:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 20:34:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-30 20:34:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 20:34:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2018-09-30 20:34:39,053 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 118 [2018-09-30 20:34:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:39,054 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2018-09-30 20:34:39,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 20:34:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2018-09-30 20:34:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 20:34:39,055 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:39,055 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-30 20:34:39,055 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:39,056 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:39,056 INFO L82 PathProgramCache]: Analyzing trace with hash -285501792, now seen corresponding path program 24 times [2018-09-30 20:34:39,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:39,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:39,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:39,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:39,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:39,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:39,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:39,326 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:39,376 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 20:34:39,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:39,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:40,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:40,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-30 20:34:40,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:34:40,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:34:40,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:40,164 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand 52 states. [2018-09-30 20:34:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:40,627 INFO L93 Difference]: Finished difference Result 135 states and 187 transitions. [2018-09-30 20:34:40,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:34:40,628 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 123 [2018-09-30 20:34:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:40,628 INFO L225 Difference]: With dead ends: 135 [2018-09-30 20:34:40,629 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 20:34:40,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:34:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 20:34:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-30 20:34:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 20:34:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2018-09-30 20:34:40,634 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 123 [2018-09-30 20:34:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:40,635 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2018-09-30 20:34:40,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:34:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2018-09-30 20:34:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 20:34:40,636 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:40,636 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-30 20:34:40,636 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:40,636 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1768277393, now seen corresponding path program 25 times [2018-09-30 20:34:40,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:40,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:40,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:40,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:40,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:40,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:40,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:40,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:40,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:41,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:41,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-09-30 20:34:41,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 20:34:41,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 20:34:41,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:41,692 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand 54 states. [2018-09-30 20:34:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:42,222 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2018-09-30 20:34:42,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 20:34:42,222 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 128 [2018-09-30 20:34:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:42,223 INFO L225 Difference]: With dead ends: 140 [2018-09-30 20:34:42,223 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 20:34:42,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 20:34:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-30 20:34:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 20:34:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2018-09-30 20:34:42,228 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 128 [2018-09-30 20:34:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:42,229 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2018-09-30 20:34:42,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 20:34:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2018-09-30 20:34:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 20:34:42,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:42,230 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-30 20:34:42,230 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:42,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash -77052608, now seen corresponding path program 26 times [2018-09-30 20:34:42,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:42,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:42,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:42,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:42,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:42,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:42,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:42,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:42,609 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:42,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:42,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:43,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:43,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-30 20:34:43,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:34:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:34:43,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:43,718 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 56 states. [2018-09-30 20:34:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:44,114 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2018-09-30 20:34:44,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:34:44,115 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 133 [2018-09-30 20:34:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:44,116 INFO L225 Difference]: With dead ends: 145 [2018-09-30 20:34:44,116 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 20:34:44,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:34:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 20:34:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-30 20:34:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 20:34:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2018-09-30 20:34:44,121 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 133 [2018-09-30 20:34:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:44,122 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2018-09-30 20:34:44,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:34:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2018-09-30 20:34:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 20:34:44,123 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:44,123 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-30 20:34:44,123 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:44,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1019034353, now seen corresponding path program 27 times [2018-09-30 20:34:44,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:44,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:44,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:44,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:44,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:44,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:44,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:44,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:44,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 20:34:44,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:44,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:45,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:45,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2018-09-30 20:34:45,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 20:34:45,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 20:34:45,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:45,502 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 58 states. [2018-09-30 20:34:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:46,006 INFO L93 Difference]: Finished difference Result 150 states and 208 transitions. [2018-09-30 20:34:46,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:34:46,007 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 138 [2018-09-30 20:34:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:46,007 INFO L225 Difference]: With dead ends: 150 [2018-09-30 20:34:46,008 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 20:34:46,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:34:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 20:34:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-30 20:34:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 20:34:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2018-09-30 20:34:46,014 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 138 [2018-09-30 20:34:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:46,014 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2018-09-30 20:34:46,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 20:34:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2018-09-30 20:34:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 20:34:46,015 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:46,015 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-30 20:34:46,016 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:46,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:46,016 INFO L82 PathProgramCache]: Analyzing trace with hash -247256096, now seen corresponding path program 28 times [2018-09-30 20:34:46,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:46,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:46,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:46,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:46,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:46,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:46,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:46,350 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:46,388 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:46,388 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:46,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:47,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:47,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-30 20:34:47,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:34:47,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:34:47,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:47,648 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 60 states. [2018-09-30 20:34:48,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:48,294 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2018-09-30 20:34:48,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:34:48,295 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 143 [2018-09-30 20:34:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:48,296 INFO L225 Difference]: With dead ends: 155 [2018-09-30 20:34:48,296 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 20:34:48,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:34:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 20:34:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-30 20:34:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 20:34:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 207 transitions. [2018-09-30 20:34:48,302 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 207 transitions. Word has length 143 [2018-09-30 20:34:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:48,303 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 207 transitions. [2018-09-30 20:34:48,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:34:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 207 transitions. [2018-09-30 20:34:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 20:34:48,304 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:48,304 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-30 20:34:48,304 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:48,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1791588433, now seen corresponding path program 29 times [2018-09-30 20:34:48,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:48,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:48,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:48,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:48,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:49,392 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:49,392 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:49,399 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:49,463 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 20:34:49,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:49,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:50,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:50,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2018-09-30 20:34:50,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 20:34:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 20:34:50,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:50,254 INFO L87 Difference]: Start difference. First operand 149 states and 207 transitions. Second operand 62 states. [2018-09-30 20:34:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:50,897 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2018-09-30 20:34:50,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:34:50,898 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 148 [2018-09-30 20:34:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:50,899 INFO L225 Difference]: With dead ends: 160 [2018-09-30 20:34:50,899 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 20:34:50,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:34:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 20:34:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-30 20:34:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 20:34:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 214 transitions. [2018-09-30 20:34:50,906 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 214 transitions. Word has length 148 [2018-09-30 20:34:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:50,906 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 214 transitions. [2018-09-30 20:34:50,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 20:34:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 214 transitions. [2018-09-30 20:34:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-30 20:34:50,907 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:50,907 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-30 20:34:50,908 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:50,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:50,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1713785472, now seen corresponding path program 30 times [2018-09-30 20:34:50,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:50,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:50,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:50,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:50,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:51,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:51,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:51,271 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:51,339 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 20:34:51,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:51,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:52,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:52,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-30 20:34:52,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:34:52,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:34:52,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:52,174 INFO L87 Difference]: Start difference. First operand 154 states and 214 transitions. Second operand 64 states. [2018-09-30 20:34:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:52,928 INFO L93 Difference]: Finished difference Result 165 states and 229 transitions. [2018-09-30 20:34:52,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:34:52,928 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 153 [2018-09-30 20:34:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:52,929 INFO L225 Difference]: With dead ends: 165 [2018-09-30 20:34:52,929 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 20:34:52,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 20:34:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-30 20:34:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 20:34:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2018-09-30 20:34:52,936 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 153 [2018-09-30 20:34:52,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:52,936 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2018-09-30 20:34:52,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:34:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2018-09-30 20:34:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 20:34:52,937 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:52,937 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-30 20:34:52,937 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:52,938 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash -835682895, now seen corresponding path program 31 times [2018-09-30 20:34:52,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:52,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:52,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:52,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:52,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:53,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:53,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:53,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:53,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:54,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:54,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2018-09-30 20:34:54,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 20:34:54,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 20:34:54,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:54,248 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand 66 states. [2018-09-30 20:34:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:55,466 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2018-09-30 20:34:55,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:34:55,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 158 [2018-09-30 20:34:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:55,467 INFO L225 Difference]: With dead ends: 170 [2018-09-30 20:34:55,468 INFO L226 Difference]: Without dead ends: 168 [2018-09-30 20:34:55,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-30 20:34:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-30 20:34:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 20:34:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2018-09-30 20:34:55,474 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 158 [2018-09-30 20:34:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:55,474 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2018-09-30 20:34:55,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 20:34:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2018-09-30 20:34:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-30 20:34:55,475 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:55,475 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-30 20:34:55,476 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:55,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash 925606176, now seen corresponding path program 32 times [2018-09-30 20:34:55,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:55,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:55,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:55,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:55,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:55,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:55,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:55,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:55,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:55,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:55,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:56,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:56,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-30 20:34:56,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:34:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:34:56,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:56,809 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand 68 states. [2018-09-30 20:34:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:57,532 INFO L93 Difference]: Finished difference Result 175 states and 243 transitions. [2018-09-30 20:34:57,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:34:57,533 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 163 [2018-09-30 20:34:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:57,534 INFO L225 Difference]: With dead ends: 175 [2018-09-30 20:34:57,534 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 20:34:57,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 20:34:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-30 20:34:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 20:34:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2018-09-30 20:34:57,540 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 163 [2018-09-30 20:34:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:57,541 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2018-09-30 20:34:57,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:34:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2018-09-30 20:34:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 20:34:57,542 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:57,542 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-30 20:34:57,542 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:57,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1441248495, now seen corresponding path program 33 times [2018-09-30 20:34:57,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:57,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:57,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:57,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:57,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:58,041 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:58,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:58,050 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:58,130 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 20:34:58,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:58,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:59,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:59,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-09-30 20:34:59,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 20:34:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 20:34:59,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:59,099 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 70 states. [2018-09-30 20:34:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:59,730 INFO L93 Difference]: Finished difference Result 180 states and 250 transitions. [2018-09-30 20:34:59,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:34:59,730 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 168 [2018-09-30 20:34:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:59,731 INFO L225 Difference]: With dead ends: 180 [2018-09-30 20:34:59,731 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 20:34:59,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:34:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 20:34:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-30 20:34:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-30 20:34:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2018-09-30 20:34:59,738 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 168 [2018-09-30 20:34:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:59,738 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2018-09-30 20:34:59,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 20:34:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2018-09-30 20:34:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 20:34:59,740 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:59,740 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-30 20:34:59,740 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:59,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash 686632896, now seen corresponding path program 34 times [2018-09-30 20:34:59,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:59,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:59,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:59,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:59,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:00,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:00,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:00,081 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:00,126 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:00,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:00,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:01,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:01,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-30 20:35:01,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:35:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:35:01,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:01,101 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 72 states. [2018-09-30 20:35:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:01,764 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2018-09-30 20:35:01,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:35:01,764 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 173 [2018-09-30 20:35:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:01,765 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:35:01,765 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:35:01,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:35:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:35:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-30 20:35:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 20:35:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2018-09-30 20:35:01,770 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 173 [2018-09-30 20:35:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:01,770 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2018-09-30 20:35:01,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:35:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2018-09-30 20:35:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 20:35:01,771 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:01,771 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-30 20:35:01,771 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:01,771 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash 170319985, now seen corresponding path program 35 times [2018-09-30 20:35:01,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:01,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:01,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:01,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:01,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:02,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:02,974 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:02,982 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:35:03,097 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 20:35:03,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:03,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:05,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:05,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2018-09-30 20:35:05,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 20:35:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 20:35:05,430 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:05,430 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand 74 states. [2018-09-30 20:35:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:06,238 INFO L93 Difference]: Finished difference Result 190 states and 264 transitions. [2018-09-30 20:35:06,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 20:35:06,239 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 178 [2018-09-30 20:35:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:06,240 INFO L225 Difference]: With dead ends: 190 [2018-09-30 20:35:06,240 INFO L226 Difference]: Without dead ends: 188 [2018-09-30 20:35:06,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-09-30 20:35:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-30 20:35:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-30 20:35:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 20:35:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2018-09-30 20:35:06,246 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 178 [2018-09-30 20:35:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:06,247 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2018-09-30 20:35:06,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 20:35:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2018-09-30 20:35:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 20:35:06,248 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:06,248 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-30 20:35:06,248 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:06,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:06,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2021329312, now seen corresponding path program 36 times [2018-09-30 20:35:06,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:06,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:06,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:06,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:06,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:07,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:07,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:07,534 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:35:07,616 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 20:35:07,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:07,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:09,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:09,340 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-30 20:35:09,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 20:35:09,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 20:35:09,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:09,341 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand 76 states. [2018-09-30 20:35:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:10,048 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2018-09-30 20:35:10,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:35:10,048 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 183 [2018-09-30 20:35:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:10,050 INFO L225 Difference]: With dead ends: 195 [2018-09-30 20:35:10,050 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 20:35:10,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-09-30 20:35:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 20:35:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-30 20:35:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 20:35:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2018-09-30 20:35:10,055 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 183 [2018-09-30 20:35:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:10,055 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2018-09-30 20:35:10,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 20:35:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2018-09-30 20:35:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 20:35:10,056 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:10,056 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-30 20:35:10,057 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:10,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash 578960849, now seen corresponding path program 37 times [2018-09-30 20:35:10,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:10,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:10,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:10,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:10,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:10,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:10,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:10,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:10,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:11,643 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:11,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2018-09-30 20:35:11,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 20:35:11,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 20:35:11,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:11,645 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 78 states. [2018-09-30 20:35:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:12,364 INFO L93 Difference]: Finished difference Result 200 states and 278 transitions. [2018-09-30 20:35:12,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:35:12,364 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 188 [2018-09-30 20:35:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:12,366 INFO L225 Difference]: With dead ends: 200 [2018-09-30 20:35:12,366 INFO L226 Difference]: Without dead ends: 198 [2018-09-30 20:35:12,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:35:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-30 20:35:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-30 20:35:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 20:35:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2018-09-30 20:35:12,372 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 188 [2018-09-30 20:35:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:12,372 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2018-09-30 20:35:12,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 20:35:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2018-09-30 20:35:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-30 20:35:12,374 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:12,374 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-30 20:35:12,374 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:12,374 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash -963840768, now seen corresponding path program 38 times [2018-09-30 20:35:12,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:12,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:12,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:12,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:12,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:13,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:13,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:13,935 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:35:13,984 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:35:13,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:13,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:15,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:15,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-30 20:35:15,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 20:35:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 20:35:15,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:15,050 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 80 states. [2018-09-30 20:35:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:15,867 INFO L93 Difference]: Finished difference Result 205 states and 285 transitions. [2018-09-30 20:35:15,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:35:15,868 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 193 [2018-09-30 20:35:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:15,868 INFO L225 Difference]: With dead ends: 205 [2018-09-30 20:35:15,869 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 20:35:15,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:35:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 20:35:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-30 20:35:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 20:35:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2018-09-30 20:35:15,874 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 193 [2018-09-30 20:35:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:15,874 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2018-09-30 20:35:15,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 20:35:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2018-09-30 20:35:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 20:35:15,876 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:15,876 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-30 20:35:15,876 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:15,876 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1345297615, now seen corresponding path program 39 times [2018-09-30 20:35:15,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:15,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:15,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:15,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:15,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:16,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:16,756 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:16,764 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:35:16,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 20:35:16,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:16,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:17,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:17,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2018-09-30 20:35:17,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 20:35:17,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 20:35:17,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:17,958 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand 82 states. [2018-09-30 20:35:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:19,039 INFO L93 Difference]: Finished difference Result 210 states and 292 transitions. [2018-09-30 20:35:19,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:35:19,039 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 198 [2018-09-30 20:35:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:19,040 INFO L225 Difference]: With dead ends: 210 [2018-09-30 20:35:19,040 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 20:35:19,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:35:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 20:35:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-30 20:35:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-30 20:35:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 284 transitions. [2018-09-30 20:35:19,047 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 284 transitions. Word has length 198 [2018-09-30 20:35:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:19,048 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 284 transitions. [2018-09-30 20:35:19,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 20:35:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 284 transitions. [2018-09-30 20:35:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 20:35:19,049 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:19,049 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-30 20:35:19,049 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:19,049 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash 555690912, now seen corresponding path program 40 times [2018-09-30 20:35:19,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:19,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:19,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:19,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:19,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:19,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:19,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:19,585 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:19,635 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:19,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:19,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:20,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:20,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-30 20:35:20,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 20:35:20,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 20:35:20,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:20,932 INFO L87 Difference]: Start difference. First operand 204 states and 284 transitions. Second operand 84 states. [2018-09-30 20:35:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:21,788 INFO L93 Difference]: Finished difference Result 215 states and 299 transitions. [2018-09-30 20:35:21,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:35:21,788 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 203 [2018-09-30 20:35:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:21,789 INFO L225 Difference]: With dead ends: 215 [2018-09-30 20:35:21,789 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 20:35:21,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:35:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 20:35:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-30 20:35:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 20:35:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2018-09-30 20:35:21,796 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 203 [2018-09-30 20:35:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:21,796 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2018-09-30 20:35:21,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 20:35:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2018-09-30 20:35:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 20:35:21,797 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:21,797 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-30 20:35:21,797 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:21,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1463242897, now seen corresponding path program 41 times [2018-09-30 20:35:21,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:21,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:21,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:21,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:21,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:22,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:22,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:22,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:35:22,330 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 20:35:22,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:22,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:25,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:25,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 85 [2018-09-30 20:35:25,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 20:35:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 20:35:25,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:25,864 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand 86 states. [2018-09-30 20:35:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:26,927 INFO L93 Difference]: Finished difference Result 220 states and 306 transitions. [2018-09-30 20:35:26,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 20:35:26,927 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 208 [2018-09-30 20:35:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:26,928 INFO L225 Difference]: With dead ends: 220 [2018-09-30 20:35:26,928 INFO L226 Difference]: Without dead ends: 218 [2018-09-30 20:35:26,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-09-30 20:35:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-30 20:35:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-09-30 20:35:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-30 20:35:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 298 transitions. [2018-09-30 20:35:26,933 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 298 transitions. Word has length 208 [2018-09-30 20:35:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:26,933 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 298 transitions. [2018-09-30 20:35:26,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 20:35:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 298 transitions. [2018-09-30 20:35:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-30 20:35:26,934 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:26,934 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-09-30 20:35:26,934 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:26,935 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash 970299968, now seen corresponding path program 42 times [2018-09-30 20:35:26,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:26,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:26,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:26,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:26,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:27,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:27,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:27,401 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:35:27,495 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 20:35:27,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:27,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:28,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:28,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-30 20:35:28,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 20:35:28,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 20:35:28,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:28,957 INFO L87 Difference]: Start difference. First operand 214 states and 298 transitions. Second operand 88 states. [2018-09-30 20:35:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:29,948 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2018-09-30 20:35:29,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:35:29,948 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 213 [2018-09-30 20:35:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:29,949 INFO L225 Difference]: With dead ends: 225 [2018-09-30 20:35:29,949 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 20:35:29,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:35:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 20:35:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-09-30 20:35:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 20:35:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 305 transitions. [2018-09-30 20:35:29,954 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 305 transitions. Word has length 213 [2018-09-30 20:35:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:29,954 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 305 transitions. [2018-09-30 20:35:29,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 20:35:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 305 transitions. [2018-09-30 20:35:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 20:35:29,955 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:29,956 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-09-30 20:35:29,956 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:29,956 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash 106759665, now seen corresponding path program 43 times [2018-09-30 20:35:29,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:29,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:29,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:29,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:29,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:30,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:30,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:30,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:30,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:31,593 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:31,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89 [2018-09-30 20:35:31,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 20:35:31,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 20:35:31,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:31,595 INFO L87 Difference]: Start difference. First operand 219 states and 305 transitions. Second operand 90 states. [2018-09-30 20:35:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:32,431 INFO L93 Difference]: Finished difference Result 230 states and 320 transitions. [2018-09-30 20:35:32,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 20:35:32,431 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 218 [2018-09-30 20:35:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:32,432 INFO L225 Difference]: With dead ends: 230 [2018-09-30 20:35:32,432 INFO L226 Difference]: Without dead ends: 228 [2018-09-30 20:35:32,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:35:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-30 20:35:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-09-30 20:35:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-30 20:35:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2018-09-30 20:35:32,437 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 218 [2018-09-30 20:35:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:32,437 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2018-09-30 20:35:32,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 20:35:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2018-09-30 20:35:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-30 20:35:32,438 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:32,439 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-09-30 20:35:32,439 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:32,439 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1161150240, now seen corresponding path program 44 times [2018-09-30 20:35:32,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:32,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:32,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:32,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:32,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:32,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:32,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:32,852 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:35:32,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:35:32,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:32,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:34,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:34,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-30 20:35:34,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 20:35:34,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 20:35:34,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:34,241 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand 92 states. [2018-09-30 20:35:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:35,231 INFO L93 Difference]: Finished difference Result 235 states and 327 transitions. [2018-09-30 20:35:35,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:35:35,231 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 223 [2018-09-30 20:35:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:35,232 INFO L225 Difference]: With dead ends: 235 [2018-09-30 20:35:35,232 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 20:35:35,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:35:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 20:35:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-09-30 20:35:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 20:35:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2018-09-30 20:35:35,238 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 223 [2018-09-30 20:35:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:35,238 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2018-09-30 20:35:35,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 20:35:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2018-09-30 20:35:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 20:35:35,239 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:35,239 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-09-30 20:35:35,239 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:35,239 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1399292753, now seen corresponding path program 45 times [2018-09-30 20:35:35,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:35,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:35,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:35,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:35,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:35,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:35,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:35,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:35:35,720 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 20:35:35,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:35,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:36,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:36,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2018-09-30 20:35:36,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 20:35:36,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 20:35:36,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:36,976 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand 94 states. [2018-09-30 20:35:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:38,049 INFO L93 Difference]: Finished difference Result 240 states and 334 transitions. [2018-09-30 20:35:38,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:35:38,049 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 228 [2018-09-30 20:35:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:38,050 INFO L225 Difference]: With dead ends: 240 [2018-09-30 20:35:38,050 INFO L226 Difference]: Without dead ends: 238 [2018-09-30 20:35:38,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:35:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-09-30 20:35:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-09-30 20:35:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-09-30 20:35:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 326 transitions. [2018-09-30 20:35:38,057 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 326 transitions. Word has length 228 [2018-09-30 20:35:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:38,058 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 326 transitions. [2018-09-30 20:35:38,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 20:35:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 326 transitions. [2018-09-30 20:35:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-30 20:35:38,059 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:38,059 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-09-30 20:35:38,060 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:38,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:38,060 INFO L82 PathProgramCache]: Analyzing trace with hash -174645376, now seen corresponding path program 46 times [2018-09-30 20:35:38,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:38,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:38,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:38,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:38,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:38,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:38,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:38,625 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:38,703 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:38,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:38,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:40,393 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:40,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-30 20:35:40,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 20:35:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 20:35:40,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:40,394 INFO L87 Difference]: Start difference. First operand 234 states and 326 transitions. Second operand 96 states. [2018-09-30 20:35:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:41,344 INFO L93 Difference]: Finished difference Result 245 states and 341 transitions. [2018-09-30 20:35:41,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:35:41,345 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 233 [2018-09-30 20:35:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:41,346 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:35:41,346 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:35:41,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:35:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:35:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-09-30 20:35:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 20:35:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2018-09-30 20:35:41,354 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 233 [2018-09-30 20:35:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:41,354 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2018-09-30 20:35:41,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 20:35:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2018-09-30 20:35:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 20:35:41,355 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:41,356 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-09-30 20:35:41,356 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:41,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash -587413327, now seen corresponding path program 47 times [2018-09-30 20:35:41,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:41,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:41,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:41,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:41,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:41,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:41,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:41,812 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:35:41,925 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 20:35:41,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:41,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:43,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:43,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2018-09-30 20:35:43,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 20:35:43,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 20:35:43,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:43,312 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand 98 states. [2018-09-30 20:35:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:44,600 INFO L93 Difference]: Finished difference Result 250 states and 348 transitions. [2018-09-30 20:35:44,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 20:35:44,600 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 238 [2018-09-30 20:35:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:44,602 INFO L225 Difference]: With dead ends: 250 [2018-09-30 20:35:44,602 INFO L226 Difference]: Without dead ends: 248 [2018-09-30 20:35:44,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:35:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-09-30 20:35:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-09-30 20:35:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-30 20:35:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2018-09-30 20:35:44,609 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 238 [2018-09-30 20:35:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:44,610 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2018-09-30 20:35:44,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 20:35:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2018-09-30 20:35:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-30 20:35:44,611 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:44,611 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-09-30 20:35:44,611 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:44,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:44,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2091502048, now seen corresponding path program 48 times [2018-09-30 20:35:44,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:44,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:44,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:44,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:44,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:45,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:45,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:45,115 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:35:45,222 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 20:35:45,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:45,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:46,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:46,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-30 20:35:46,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 20:35:46,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 20:35:46,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:46,600 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand 100 states. [2018-09-30 20:35:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:47,900 INFO L93 Difference]: Finished difference Result 255 states and 355 transitions. [2018-09-30 20:35:47,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:35:47,900 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 243 [2018-09-30 20:35:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:47,901 INFO L225 Difference]: With dead ends: 255 [2018-09-30 20:35:47,901 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 20:35:47,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:35:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 20:35:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-09-30 20:35:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 20:35:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2018-09-30 20:35:47,907 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 243 [2018-09-30 20:35:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:47,907 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2018-09-30 20:35:47,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 20:35:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2018-09-30 20:35:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 20:35:47,908 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:47,908 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-09-30 20:35:47,908 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:47,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1438460399, now seen corresponding path program 49 times [2018-09-30 20:35:47,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:47,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:47,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:47,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:47,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:48,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:48,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:48,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:48,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:49,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:49,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2018-09-30 20:35:49,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 20:35:49,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 20:35:49,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:49,942 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand 102 states. [2018-09-30 20:35:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:51,269 INFO L93 Difference]: Finished difference Result 260 states and 362 transitions. [2018-09-30 20:35:51,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 20:35:51,270 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 248 [2018-09-30 20:35:51,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:51,271 INFO L225 Difference]: With dead ends: 260 [2018-09-30 20:35:51,272 INFO L226 Difference]: Without dead ends: 258 [2018-09-30 20:35:51,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:35:51,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-09-30 20:35:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-09-30 20:35:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-09-30 20:35:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2018-09-30 20:35:51,281 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 248 [2018-09-30 20:35:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:51,281 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2018-09-30 20:35:51,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 20:35:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2018-09-30 20:35:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-30 20:35:51,291 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:51,291 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-09-30 20:35:51,291 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:51,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:51,292 INFO L82 PathProgramCache]: Analyzing trace with hash -459176768, now seen corresponding path program 50 times [2018-09-30 20:35:51,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:51,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:51,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:51,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:51,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:52,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:52,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:52,124 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:35:52,183 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:35:52,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:52,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:53,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:53,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-30 20:35:53,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 20:35:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 20:35:53,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:53,694 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand 104 states. [2018-09-30 20:35:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:55,039 INFO L93 Difference]: Finished difference Result 265 states and 369 transitions. [2018-09-30 20:35:55,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:35:55,039 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 253 [2018-09-30 20:35:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:55,041 INFO L225 Difference]: With dead ends: 265 [2018-09-30 20:35:55,041 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 20:35:55,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:35:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 20:35:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-09-30 20:35:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 20:35:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 361 transitions. [2018-09-30 20:35:55,048 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 361 transitions. Word has length 253 [2018-09-30 20:35:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:55,049 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 361 transitions. [2018-09-30 20:35:55,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 20:35:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 361 transitions. [2018-09-30 20:35:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 20:35:55,050 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:55,050 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-09-30 20:35:55,051 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:55,051 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:55,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053071, now seen corresponding path program 51 times [2018-09-30 20:35:55,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:55,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:55,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:55,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:55,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:55,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:55,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:55,597 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:35:55,759 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 20:35:55,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:55,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:57,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:57,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2018-09-30 20:35:57,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 20:35:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 20:35:57,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:57,303 INFO L87 Difference]: Start difference. First operand 259 states and 361 transitions. Second operand 106 states. [2018-09-30 20:35:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:58,736 INFO L93 Difference]: Finished difference Result 270 states and 376 transitions. [2018-09-30 20:35:58,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 20:35:58,736 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 258 [2018-09-30 20:35:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:58,738 INFO L225 Difference]: With dead ends: 270 [2018-09-30 20:35:58,738 INFO L226 Difference]: Without dead ends: 268 [2018-09-30 20:35:58,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:35:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-09-30 20:35:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-09-30 20:35:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-09-30 20:35:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 368 transitions. [2018-09-30 20:35:58,743 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 368 transitions. Word has length 258 [2018-09-30 20:35:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:58,744 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 368 transitions. [2018-09-30 20:35:58,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 20:35:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 368 transitions. [2018-09-30 20:35:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-09-30 20:35:58,745 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:58,745 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-09-30 20:35:58,745 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:58,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash 563284832, now seen corresponding path program 52 times [2018-09-30 20:35:58,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:58,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:58,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:58,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:58,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:59,427 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:59,427 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:35:59,436 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:59,495 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:59,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:59,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:01,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:01,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-30 20:36:01,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 20:36:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 20:36:01,052 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:01,052 INFO L87 Difference]: Start difference. First operand 264 states and 368 transitions. Second operand 108 states. [2018-09-30 20:36:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:02,513 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2018-09-30 20:36:02,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:36:02,513 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 263 [2018-09-30 20:36:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:02,515 INFO L225 Difference]: With dead ends: 275 [2018-09-30 20:36:02,515 INFO L226 Difference]: Without dead ends: 273 [2018-09-30 20:36:02,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:36:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-30 20:36:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-09-30 20:36:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-30 20:36:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2018-09-30 20:36:02,520 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 263 [2018-09-30 20:36:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:02,520 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2018-09-30 20:36:02,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 20:36:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2018-09-30 20:36:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-30 20:36:02,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:02,521 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-09-30 20:36:02,521 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:02,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:02,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1996048593, now seen corresponding path program 53 times [2018-09-30 20:36:02,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:02,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:02,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:02,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:02,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:02,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:02,949 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:02,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:36:03,087 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 20:36:03,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:03,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:04,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:04,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 109 [2018-09-30 20:36:04,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 20:36:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 20:36:04,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:04,752 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 110 states. [2018-09-30 20:36:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:06,280 INFO L93 Difference]: Finished difference Result 280 states and 390 transitions. [2018-09-30 20:36:06,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:36:06,280 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 268 [2018-09-30 20:36:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:06,281 INFO L225 Difference]: With dead ends: 280 [2018-09-30 20:36:06,281 INFO L226 Difference]: Without dead ends: 278 [2018-09-30 20:36:06,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:36:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-09-30 20:36:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-09-30 20:36:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-09-30 20:36:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2018-09-30 20:36:06,289 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 268 [2018-09-30 20:36:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:06,289 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2018-09-30 20:36:06,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 20:36:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2018-09-30 20:36:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-30 20:36:06,290 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:06,291 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-09-30 20:36:06,291 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:06,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1774504448, now seen corresponding path program 54 times [2018-09-30 20:36:06,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:06,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:06,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:06,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:06,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:06,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:06,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:06,778 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:36:06,898 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 20:36:06,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:06,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:08,519 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:08,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-30 20:36:08,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 20:36:08,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 20:36:08,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:08,521 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand 112 states. [2018-09-30 20:36:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:09,961 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2018-09-30 20:36:09,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:36:09,961 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 273 [2018-09-30 20:36:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:09,962 INFO L225 Difference]: With dead ends: 285 [2018-09-30 20:36:09,962 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 20:36:09,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:36:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 20:36:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-09-30 20:36:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 20:36:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 389 transitions. [2018-09-30 20:36:09,971 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 389 transitions. Word has length 273 [2018-09-30 20:36:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:09,971 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 389 transitions. [2018-09-30 20:36:09,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 20:36:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 389 transitions. [2018-09-30 20:36:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 20:36:09,972 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:09,973 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-09-30 20:36:09,973 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:09,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -281694671, now seen corresponding path program 55 times [2018-09-30 20:36:09,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:09,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:09,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:09,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:09,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:10,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:10,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:10,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:10,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:12,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:12,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2018-09-30 20:36:12,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 20:36:12,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 20:36:12,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:12,290 INFO L87 Difference]: Start difference. First operand 279 states and 389 transitions. Second operand 114 states. [2018-09-30 20:36:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:13,678 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2018-09-30 20:36:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:36:13,678 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 278 [2018-09-30 20:36:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:13,679 INFO L225 Difference]: With dead ends: 290 [2018-09-30 20:36:13,679 INFO L226 Difference]: Without dead ends: 288 [2018-09-30 20:36:13,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:36:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-09-30 20:36:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-09-30 20:36:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-09-30 20:36:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 396 transitions. [2018-09-30 20:36:13,685 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 396 transitions. Word has length 278 [2018-09-30 20:36:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:13,685 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 396 transitions. [2018-09-30 20:36:13,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 20:36:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 396 transitions. [2018-09-30 20:36:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-30 20:36:13,686 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:13,686 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-09-30 20:36:13,686 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:13,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:13,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1269776224, now seen corresponding path program 56 times [2018-09-30 20:36:13,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:13,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:13,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:13,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:13,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:14,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:14,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:14,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:36:14,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:36:14,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:14,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:16,140 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:16,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-30 20:36:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 20:36:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 20:36:16,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:16,142 INFO L87 Difference]: Start difference. First operand 284 states and 396 transitions. Second operand 116 states. [2018-09-30 20:36:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:17,807 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-09-30 20:36:17,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:36:17,807 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 283 [2018-09-30 20:36:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:17,808 INFO L225 Difference]: With dead ends: 295 [2018-09-30 20:36:17,808 INFO L226 Difference]: Without dead ends: 293 [2018-09-30 20:36:17,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:36:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-09-30 20:36:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-09-30 20:36:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-09-30 20:36:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2018-09-30 20:36:17,814 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 283 [2018-09-30 20:36:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:17,814 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2018-09-30 20:36:17,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 20:36:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2018-09-30 20:36:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-30 20:36:17,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:17,816 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-09-30 20:36:17,816 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:17,816 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:17,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1555749777, now seen corresponding path program 57 times [2018-09-30 20:36:17,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:17,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:17,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:17,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:17,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:18,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:18,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:18,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:36:18,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 20:36:18,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:18,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:20,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:20,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2018-09-30 20:36:20,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 20:36:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 20:36:20,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:20,295 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand 118 states. [2018-09-30 20:36:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:21,823 INFO L93 Difference]: Finished difference Result 300 states and 418 transitions. [2018-09-30 20:36:21,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:36:21,824 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 288 [2018-09-30 20:36:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:21,825 INFO L225 Difference]: With dead ends: 300 [2018-09-30 20:36:21,825 INFO L226 Difference]: Without dead ends: 298 [2018-09-30 20:36:21,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:36:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-09-30 20:36:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-09-30 20:36:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-09-30 20:36:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 410 transitions. [2018-09-30 20:36:21,833 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 410 transitions. Word has length 288 [2018-09-30 20:36:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:21,833 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 410 transitions. [2018-09-30 20:36:21,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 20:36:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 410 transitions. [2018-09-30 20:36:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-30 20:36:21,834 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:21,835 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-09-30 20:36:21,835 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:21,835 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1607528256, now seen corresponding path program 58 times [2018-09-30 20:36:21,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:21,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:21,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:21,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:21,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:22,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:22,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:22,326 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:36:22,398 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:36:22,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:22,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:24,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:24,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-30 20:36:24,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 20:36:24,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 20:36:24,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:24,157 INFO L87 Difference]: Start difference. First operand 294 states and 410 transitions. Second operand 120 states. [2018-09-30 20:36:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:25,631 INFO L93 Difference]: Finished difference Result 305 states and 425 transitions. [2018-09-30 20:36:25,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:36:25,632 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 293 [2018-09-30 20:36:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:25,633 INFO L225 Difference]: With dead ends: 305 [2018-09-30 20:36:25,633 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 20:36:25,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:36:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 20:36:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-09-30 20:36:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 20:36:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 417 transitions. [2018-09-30 20:36:25,641 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 417 transitions. Word has length 293 [2018-09-30 20:36:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:25,641 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 417 transitions. [2018-09-30 20:36:25,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 20:36:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 417 transitions. [2018-09-30 20:36:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 20:36:25,643 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:25,643 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-09-30 20:36:25,643 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:25,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1898893553, now seen corresponding path program 59 times [2018-09-30 20:36:25,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:25,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:25,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:25,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:25,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:26,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:26,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:26,166 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:36:26,306 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 20:36:26,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:26,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:28,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:28,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 121 [2018-09-30 20:36:28,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 20:36:28,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 20:36:28,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:28,049 INFO L87 Difference]: Start difference. First operand 299 states and 417 transitions. Second operand 122 states. [2018-09-30 20:36:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:29,774 INFO L93 Difference]: Finished difference Result 310 states and 432 transitions. [2018-09-30 20:36:29,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 20:36:29,775 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 298 [2018-09-30 20:36:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:29,776 INFO L225 Difference]: With dead ends: 310 [2018-09-30 20:36:29,776 INFO L226 Difference]: Without dead ends: 308 [2018-09-30 20:36:29,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:36:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-09-30 20:36:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2018-09-30 20:36:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-09-30 20:36:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 424 transitions. [2018-09-30 20:36:29,782 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 424 transitions. Word has length 298 [2018-09-30 20:36:29,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:29,782 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 424 transitions. [2018-09-30 20:36:29,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 20:36:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 424 transitions. [2018-09-30 20:36:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-30 20:36:29,784 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:29,784 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1] [2018-09-30 20:36:29,784 INFO L423 AbstractCegarLoop]: === Iteration 62 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:29,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash -765504032, now seen corresponding path program 60 times [2018-09-30 20:36:29,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:29,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:29,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:30,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:30,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:30,321 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:36:30,472 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 20:36:30,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:30,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:32,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:32,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-30 20:36:32,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 20:36:32,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 20:36:32,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:32,334 INFO L87 Difference]: Start difference. First operand 304 states and 424 transitions. Second operand 124 states. [2018-09-30 20:36:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:33,995 INFO L93 Difference]: Finished difference Result 315 states and 439 transitions. [2018-09-30 20:36:33,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:36:33,995 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 303 [2018-09-30 20:36:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:33,996 INFO L225 Difference]: With dead ends: 315 [2018-09-30 20:36:33,996 INFO L226 Difference]: Without dead ends: 313 [2018-09-30 20:36:33,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:36:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-09-30 20:36:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-09-30 20:36:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-09-30 20:36:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2018-09-30 20:36:34,003 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 303 [2018-09-30 20:36:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:34,003 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2018-09-30 20:36:34,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 20:36:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2018-09-30 20:36:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-09-30 20:36:34,004 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:34,005 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1] [2018-09-30 20:36:34,005 INFO L423 AbstractCegarLoop]: === Iteration 63 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:34,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2034790831, now seen corresponding path program 61 times [2018-09-30 20:36:34,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:34,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:34,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:34,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:34,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:34,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:34,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:34,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:34,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:36,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:36,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 125 [2018-09-30 20:36:36,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 20:36:36,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 20:36:36,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:36,631 INFO L87 Difference]: Start difference. First operand 309 states and 431 transitions. Second operand 126 states. [2018-09-30 20:36:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:38,252 INFO L93 Difference]: Finished difference Result 320 states and 446 transitions. [2018-09-30 20:36:38,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:36:38,253 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 308 [2018-09-30 20:36:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:38,254 INFO L225 Difference]: With dead ends: 320 [2018-09-30 20:36:38,254 INFO L226 Difference]: Without dead ends: 318 [2018-09-30 20:36:38,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:36:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-09-30 20:36:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2018-09-30 20:36:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-09-30 20:36:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 438 transitions. [2018-09-30 20:36:38,261 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 438 transitions. Word has length 308 [2018-09-30 20:36:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:38,261 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 438 transitions. [2018-09-30 20:36:38,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 20:36:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 438 transitions. [2018-09-30 20:36:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-30 20:36:38,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:38,263 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1] [2018-09-30 20:36:38,263 INFO L423 AbstractCegarLoop]: === Iteration 64 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:38,263 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash 429257856, now seen corresponding path program 62 times [2018-09-30 20:36:38,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:38,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:38,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:38,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:38,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:38,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:38,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:38,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:36:38,873 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:36:38,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:38,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:40,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:40,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-30 20:36:40,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 20:36:40,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 20:36:40,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:40,898 INFO L87 Difference]: Start difference. First operand 314 states and 438 transitions. Second operand 128 states. [2018-09-30 20:36:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:42,633 INFO L93 Difference]: Finished difference Result 325 states and 453 transitions. [2018-09-30 20:36:42,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:36:42,634 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 313 [2018-09-30 20:36:42,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:42,635 INFO L225 Difference]: With dead ends: 325 [2018-09-30 20:36:42,635 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 20:36:42,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:36:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 20:36:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-09-30 20:36:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 20:36:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 445 transitions. [2018-09-30 20:36:42,641 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 445 transitions. Word has length 313 [2018-09-30 20:36:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:42,642 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 445 transitions. [2018-09-30 20:36:42,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 20:36:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 445 transitions. [2018-09-30 20:36:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 20:36:42,643 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:42,643 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1] [2018-09-30 20:36:42,644 INFO L423 AbstractCegarLoop]: === Iteration 65 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:42,644 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash -322639, now seen corresponding path program 63 times [2018-09-30 20:36:42,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:42,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:42,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:42,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:42,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:43,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:43,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:43,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:36:43,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 20:36:43,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:43,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:45,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:45,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2018-09-30 20:36:45,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 20:36:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 20:36:45,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:45,308 INFO L87 Difference]: Start difference. First operand 319 states and 445 transitions. Second operand 130 states. [2018-09-30 20:36:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:47,259 INFO L93 Difference]: Finished difference Result 330 states and 460 transitions. [2018-09-30 20:36:47,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 20:36:47,259 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 318 [2018-09-30 20:36:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:47,261 INFO L225 Difference]: With dead ends: 330 [2018-09-30 20:36:47,261 INFO L226 Difference]: Without dead ends: 328 [2018-09-30 20:36:47,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:36:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-09-30 20:36:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-09-30 20:36:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-09-30 20:36:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2018-09-30 20:36:47,269 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 318 [2018-09-30 20:36:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:47,270 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2018-09-30 20:36:47,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-30 20:36:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2018-09-30 20:36:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-30 20:36:47,271 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:47,271 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1] [2018-09-30 20:36:47,272 INFO L423 AbstractCegarLoop]: === Iteration 66 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:47,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1970353376, now seen corresponding path program 64 times [2018-09-30 20:36:47,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:47,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:47,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:47,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:47,893 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:47,900 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:36:47,991 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:36:47,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:47,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:49,965 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:49,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-30 20:36:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 20:36:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 20:36:49,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:49,968 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand 132 states. [2018-09-30 20:36:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:51,800 INFO L93 Difference]: Finished difference Result 335 states and 467 transitions. [2018-09-30 20:36:51,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:36:51,800 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 323 [2018-09-30 20:36:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:51,802 INFO L225 Difference]: With dead ends: 335 [2018-09-30 20:36:51,802 INFO L226 Difference]: Without dead ends: 333 [2018-09-30 20:36:51,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:36:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-09-30 20:36:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-09-30 20:36:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-09-30 20:36:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2018-09-30 20:36:51,808 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 323 [2018-09-30 20:36:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:51,808 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2018-09-30 20:36:51,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 20:36:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2018-09-30 20:36:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-30 20:36:51,810 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:51,810 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1] [2018-09-30 20:36:51,810 INFO L423 AbstractCegarLoop]: === Iteration 67 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:51,810 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1474338543, now seen corresponding path program 65 times [2018-09-30 20:36:51,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:51,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:51,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:51,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:51,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:52,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:52,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:52,386 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:36:52,545 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 20:36:52,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:52,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:54,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:54,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-09-30 20:36:54,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-09-30 20:36:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-09-30 20:36:54,673 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:54,673 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand 134 states. [2018-09-30 20:36:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:56,661 INFO L93 Difference]: Finished difference Result 340 states and 474 transitions. [2018-09-30 20:36:56,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 20:36:56,662 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 328 [2018-09-30 20:36:56,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:56,663 INFO L225 Difference]: With dead ends: 340 [2018-09-30 20:36:56,663 INFO L226 Difference]: Without dead ends: 338 [2018-09-30 20:36:56,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-09-30 20:36:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-09-30 20:36:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2018-09-30 20:36:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-09-30 20:36:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 466 transitions. [2018-09-30 20:36:56,669 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 466 transitions. Word has length 328 [2018-09-30 20:36:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:56,670 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 466 transitions. [2018-09-30 20:36:56,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-09-30 20:36:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 466 transitions. [2018-09-30 20:36:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-30 20:36:56,671 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:56,671 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1] [2018-09-30 20:36:56,671 INFO L423 AbstractCegarLoop]: === Iteration 68 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:56,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1642322368, now seen corresponding path program 66 times [2018-09-30 20:36:56,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:56,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:56,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:56,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:56,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:57,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:57,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:57,394 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:36:57,562 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 20:36:57,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:57,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:59,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:59,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-30 20:36:59,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 20:36:59,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 20:36:59,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:59,666 INFO L87 Difference]: Start difference. First operand 334 states and 466 transitions. Second operand 136 states. [2018-09-30 20:37:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:01,850 INFO L93 Difference]: Finished difference Result 345 states and 481 transitions. [2018-09-30 20:37:01,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:37:01,850 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 333 [2018-09-30 20:37:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:01,852 INFO L225 Difference]: With dead ends: 345 [2018-09-30 20:37:01,852 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 20:37:01,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-09-30 20:37:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 20:37:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-09-30 20:37:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 20:37:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 473 transitions. [2018-09-30 20:37:01,857 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 473 transitions. Word has length 333 [2018-09-30 20:37:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:01,858 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 473 transitions. [2018-09-30 20:37:01,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 20:37:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 473 transitions. [2018-09-30 20:37:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 20:37:01,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:01,859 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1] [2018-09-30 20:37:01,859 INFO L423 AbstractCegarLoop]: === Iteration 69 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:01,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash 315258481, now seen corresponding path program 67 times [2018-09-30 20:37:01,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:01,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:01,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:01,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:01,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:02,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:02,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:02,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:02,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:04,602 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:04,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 137 [2018-09-30 20:37:04,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-09-30 20:37:04,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-09-30 20:37:04,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:04,604 INFO L87 Difference]: Start difference. First operand 339 states and 473 transitions. Second operand 138 states. [2018-09-30 20:37:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:06,840 INFO L93 Difference]: Finished difference Result 350 states and 488 transitions. [2018-09-30 20:37:06,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 20:37:06,841 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 338 [2018-09-30 20:37:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:06,842 INFO L225 Difference]: With dead ends: 350 [2018-09-30 20:37:06,842 INFO L226 Difference]: Without dead ends: 348 [2018-09-30 20:37:06,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:37:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-09-30 20:37:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2018-09-30 20:37:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-09-30 20:37:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 480 transitions. [2018-09-30 20:37:06,848 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 480 transitions. Word has length 338 [2018-09-30 20:37:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:06,849 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 480 transitions. [2018-09-30 20:37:06,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-09-30 20:37:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 480 transitions. [2018-09-30 20:37:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-30 20:37:06,850 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:06,850 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1] [2018-09-30 20:37:06,850 INFO L423 AbstractCegarLoop]: === Iteration 70 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:06,850 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1672421472, now seen corresponding path program 68 times [2018-09-30 20:37:06,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:06,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:06,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:06,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:06,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:07,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:07,606 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:07,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:37:07,691 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:37:07,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:07,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:09,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:09,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-30 20:37:09,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 20:37:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 20:37:09,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:09,912 INFO L87 Difference]: Start difference. First operand 344 states and 480 transitions. Second operand 140 states. [2018-09-30 20:37:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:12,318 INFO L93 Difference]: Finished difference Result 355 states and 495 transitions. [2018-09-30 20:37:12,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:37:12,318 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 343 [2018-09-30 20:37:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:12,319 INFO L225 Difference]: With dead ends: 355 [2018-09-30 20:37:12,320 INFO L226 Difference]: Without dead ends: 353 [2018-09-30 20:37:12,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-09-30 20:37:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-09-30 20:37:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2018-09-30 20:37:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-09-30 20:37:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2018-09-30 20:37:12,326 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 343 [2018-09-30 20:37:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:12,326 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2018-09-30 20:37:12,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 20:37:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2018-09-30 20:37:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-09-30 20:37:12,328 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:12,328 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1] [2018-09-30 20:37:12,328 INFO L423 AbstractCegarLoop]: === Iteration 71 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:12,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash -64859183, now seen corresponding path program 69 times [2018-09-30 20:37:12,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:12,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:12,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:12,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:12,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:12,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:12,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:12,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:37:13,133 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 20:37:13,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:13,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:15,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:15,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 141 [2018-09-30 20:37:15,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-09-30 20:37:15,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-09-30 20:37:15,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:15,315 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand 142 states. [2018-09-30 20:37:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:17,623 INFO L93 Difference]: Finished difference Result 360 states and 502 transitions. [2018-09-30 20:37:17,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 20:37:17,623 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 348 [2018-09-30 20:37:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:17,625 INFO L225 Difference]: With dead ends: 360 [2018-09-30 20:37:17,625 INFO L226 Difference]: Without dead ends: 358 [2018-09-30 20:37:17,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-09-30 20:37:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-30 20:37:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-09-30 20:37:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-09-30 20:37:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 494 transitions. [2018-09-30 20:37:17,632 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 494 transitions. Word has length 348 [2018-09-30 20:37:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:17,632 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 494 transitions. [2018-09-30 20:37:17,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-09-30 20:37:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 494 transitions. [2018-09-30 20:37:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-30 20:37:17,633 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:17,634 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1] [2018-09-30 20:37:17,634 INFO L423 AbstractCegarLoop]: === Iteration 72 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:17,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2072682240, now seen corresponding path program 70 times [2018-09-30 20:37:17,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:17,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:17,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:17,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:17,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:18,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:18,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:18,290 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:37:18,377 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:37:18,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:18,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:20,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:20,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-30 20:37:20,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 20:37:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 20:37:20,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:20,661 INFO L87 Difference]: Start difference. First operand 354 states and 494 transitions. Second operand 144 states. [2018-09-30 20:37:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:22,919 INFO L93 Difference]: Finished difference Result 365 states and 509 transitions. [2018-09-30 20:37:22,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:37:22,919 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 353 [2018-09-30 20:37:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:22,921 INFO L225 Difference]: With dead ends: 365 [2018-09-30 20:37:22,921 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 20:37:22,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-09-30 20:37:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 20:37:22,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-09-30 20:37:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 20:37:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 501 transitions. [2018-09-30 20:37:22,928 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 501 transitions. Word has length 353 [2018-09-30 20:37:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:22,928 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 501 transitions. [2018-09-30 20:37:22,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 20:37:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 501 transitions. [2018-09-30 20:37:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 20:37:22,929 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:22,929 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1] [2018-09-30 20:37:22,930 INFO L423 AbstractCegarLoop]: === Iteration 73 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:22,930 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1462961871, now seen corresponding path program 71 times [2018-09-30 20:37:22,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:22,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:22,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:22,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:22,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:23,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:23,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:23,586 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:37:23,772 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 20:37:23,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:23,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:26,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:26,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 145 [2018-09-30 20:37:26,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-09-30 20:37:26,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-09-30 20:37:26,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:26,061 INFO L87 Difference]: Start difference. First operand 359 states and 501 transitions. Second operand 146 states. [2018-09-30 20:37:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:28,767 INFO L93 Difference]: Finished difference Result 370 states and 516 transitions. [2018-09-30 20:37:28,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 20:37:28,768 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 358 [2018-09-30 20:37:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:28,769 INFO L225 Difference]: With dead ends: 370 [2018-09-30 20:37:28,769 INFO L226 Difference]: Without dead ends: 368 [2018-09-30 20:37:28,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-09-30 20:37:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-09-30 20:37:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2018-09-30 20:37:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-09-30 20:37:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 508 transitions. [2018-09-30 20:37:28,777 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 508 transitions. Word has length 358 [2018-09-30 20:37:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:28,777 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 508 transitions. [2018-09-30 20:37:28,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-09-30 20:37:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 508 transitions. [2018-09-30 20:37:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-30 20:37:28,778 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:28,778 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1] [2018-09-30 20:37:28,779 INFO L423 AbstractCegarLoop]: === Iteration 74 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:28,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1552962976, now seen corresponding path program 72 times [2018-09-30 20:37:28,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:28,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:28,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:28,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:28,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:30,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:30,052 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:30,060 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:37:30,243 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 20:37:30,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:30,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:32,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:32,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-30 20:37:32,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 20:37:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 20:37:32,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:32,744 INFO L87 Difference]: Start difference. First operand 364 states and 508 transitions. Second operand 148 states. [2018-09-30 20:37:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:35,173 INFO L93 Difference]: Finished difference Result 375 states and 523 transitions. [2018-09-30 20:37:35,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 20:37:35,173 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 363 [2018-09-30 20:37:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:35,175 INFO L225 Difference]: With dead ends: 375 [2018-09-30 20:37:35,175 INFO L226 Difference]: Without dead ends: 373 [2018-09-30 20:37:35,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-09-30 20:37:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-09-30 20:37:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2018-09-30 20:37:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-09-30 20:37:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 515 transitions. [2018-09-30 20:37:35,182 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 515 transitions. Word has length 363 [2018-09-30 20:37:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:35,182 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 515 transitions. [2018-09-30 20:37:35,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 20:37:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 515 transitions. [2018-09-30 20:37:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-30 20:37:35,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:35,184 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1] [2018-09-30 20:37:35,184 INFO L423 AbstractCegarLoop]: === Iteration 75 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:35,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1173382801, now seen corresponding path program 73 times [2018-09-30 20:37:35,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:35,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:35,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:35,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:35,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:35,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:35,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:38,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:38,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 149 [2018-09-30 20:37:38,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-09-30 20:37:38,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-09-30 20:37:38,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:38,386 INFO L87 Difference]: Start difference. First operand 369 states and 515 transitions. Second operand 150 states. [2018-09-30 20:37:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:40,920 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2018-09-30 20:37:40,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 20:37:40,920 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 368 [2018-09-30 20:37:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:40,922 INFO L225 Difference]: With dead ends: 380 [2018-09-30 20:37:40,922 INFO L226 Difference]: Without dead ends: 378 [2018-09-30 20:37:40,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:37:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-09-30 20:37:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2018-09-30 20:37:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-09-30 20:37:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 522 transitions. [2018-09-30 20:37:40,930 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 522 transitions. Word has length 368 [2018-09-30 20:37:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:40,930 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 522 transitions. [2018-09-30 20:37:40,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-09-30 20:37:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 522 transitions. [2018-09-30 20:37:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-30 20:37:40,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:40,932 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1] [2018-09-30 20:37:40,932 INFO L423 AbstractCegarLoop]: === Iteration 76 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:40,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash 559563840, now seen corresponding path program 74 times [2018-09-30 20:37:40,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:40,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:40,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:40,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:40,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:41,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:41,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:41,836 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:37:41,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:37:41,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:41,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:44,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:44,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-30 20:37:44,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-30 20:37:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-30 20:37:44,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:44,318 INFO L87 Difference]: Start difference. First operand 374 states and 522 transitions. Second operand 152 states. [2018-09-30 20:37:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:47,058 INFO L93 Difference]: Finished difference Result 385 states and 537 transitions. [2018-09-30 20:37:47,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:37:47,059 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 373 [2018-09-30 20:37:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:47,060 INFO L225 Difference]: With dead ends: 385 [2018-09-30 20:37:47,060 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 20:37:47,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-09-30 20:37:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 20:37:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-09-30 20:37:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 20:37:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 529 transitions. [2018-09-30 20:37:47,067 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 529 transitions. Word has length 373 [2018-09-30 20:37:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:47,068 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 529 transitions. [2018-09-30 20:37:47,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-30 20:37:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 529 transitions. [2018-09-30 20:37:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 20:37:47,069 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:47,069 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 1, 1, 1] [2018-09-30 20:37:47,069 INFO L423 AbstractCegarLoop]: === Iteration 77 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:47,070 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1228053489, now seen corresponding path program 75 times [2018-09-30 20:37:47,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:47,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:47,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:47,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:47,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:47,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:47,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:47,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:37:48,024 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 20:37:48,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:48,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:50,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:50,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 153 [2018-09-30 20:37:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-09-30 20:37:50,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-09-30 20:37:50,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:50,453 INFO L87 Difference]: Start difference. First operand 379 states and 529 transitions. Second operand 154 states. [2018-09-30 20:37:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:53,228 INFO L93 Difference]: Finished difference Result 390 states and 544 transitions. [2018-09-30 20:37:53,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 20:37:53,228 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 378 [2018-09-30 20:37:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:53,230 INFO L225 Difference]: With dead ends: 390 [2018-09-30 20:37:53,230 INFO L226 Difference]: Without dead ends: 388 [2018-09-30 20:37:53,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:37:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-09-30 20:37:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2018-09-30 20:37:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-09-30 20:37:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 536 transitions. [2018-09-30 20:37:53,237 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 536 transitions. Word has length 378 [2018-09-30 20:37:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:53,237 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 536 transitions. [2018-09-30 20:37:53,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-09-30 20:37:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 536 transitions. [2018-09-30 20:37:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-09-30 20:37:53,239 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:53,239 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 1, 1, 1] [2018-09-30 20:37:53,239 INFO L423 AbstractCegarLoop]: === Iteration 78 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:53,239 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:53,239 INFO L82 PathProgramCache]: Analyzing trace with hash -335385888, now seen corresponding path program 76 times [2018-09-30 20:37:53,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:53,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:53,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:53,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:53,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:53,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:53,937 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:53,944 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:37:54,036 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:37:54,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:54,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:56,517 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:56,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-30 20:37:56,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-30 20:37:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-30 20:37:56,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:56,519 INFO L87 Difference]: Start difference. First operand 384 states and 536 transitions. Second operand 156 states. [2018-09-30 20:37:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:59,295 INFO L93 Difference]: Finished difference Result 395 states and 551 transitions. [2018-09-30 20:37:59,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 20:37:59,295 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 383 [2018-09-30 20:37:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:59,297 INFO L225 Difference]: With dead ends: 395 [2018-09-30 20:37:59,297 INFO L226 Difference]: Without dead ends: 393 [2018-09-30 20:37:59,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:37:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-09-30 20:37:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2018-09-30 20:37:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-09-30 20:37:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 543 transitions. [2018-09-30 20:37:59,304 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 543 transitions. Word has length 383 [2018-09-30 20:37:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:59,305 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 543 transitions. [2018-09-30 20:37:59,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-09-30 20:37:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 543 transitions. [2018-09-30 20:37:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-09-30 20:37:59,306 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:59,306 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 1, 1, 1] [2018-09-30 20:37:59,306 INFO L423 AbstractCegarLoop]: === Iteration 79 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:59,307 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:59,307 INFO L82 PathProgramCache]: Analyzing trace with hash -793142959, now seen corresponding path program 77 times [2018-09-30 20:37:59,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:59,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:59,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:59,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:59,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:00,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:00,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:00,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:00,220 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 20:38:00,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:00,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:02,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:02,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 157 [2018-09-30 20:38:02,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-09-30 20:38:02,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-09-30 20:38:02,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:02,847 INFO L87 Difference]: Start difference. First operand 389 states and 543 transitions. Second operand 158 states. [2018-09-30 20:38:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:05,821 INFO L93 Difference]: Finished difference Result 400 states and 558 transitions. [2018-09-30 20:38:05,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 20:38:05,822 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 388 [2018-09-30 20:38:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:05,823 INFO L225 Difference]: With dead ends: 400 [2018-09-30 20:38:05,823 INFO L226 Difference]: Without dead ends: 398 [2018-09-30 20:38:05,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-09-30 20:38:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-09-30 20:38:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2018-09-30 20:38:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-09-30 20:38:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 550 transitions. [2018-09-30 20:38:05,830 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 550 transitions. Word has length 388 [2018-09-30 20:38:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:05,831 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 550 transitions. [2018-09-30 20:38:05,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-09-30 20:38:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 550 transitions. [2018-09-30 20:38:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-30 20:38:05,832 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:05,832 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 1, 1, 1] [2018-09-30 20:38:05,833 INFO L423 AbstractCegarLoop]: === Iteration 80 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:05,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2044540544, now seen corresponding path program 78 times [2018-09-30 20:38:05,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:05,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:05,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:05,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15093 backedges. 0 proven. 15093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:06,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:06,552 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:06,559 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:06,755 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 20:38:06,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:06,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15093 backedges. 0 proven. 15093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:09,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:09,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-09-30 20:38:09,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-09-30 20:38:09,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-09-30 20:38:09,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:09,555 INFO L87 Difference]: Start difference. First operand 394 states and 550 transitions. Second operand 160 states. Received shutdown request... [2018-09-30 20:38:12,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:38:12,056 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:38:12,062 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:38:12,062 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:38:12 BoogieIcfgContainer [2018-09-30 20:38:12,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:38:12,063 INFO L168 Benchmark]: Toolchain (without parser) took 244364.85 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.5 GB in the beginning and 892.3 MB in the end (delta: 563.4 MB). Peak memory consumption was 693.4 MB. Max. memory is 7.1 GB. [2018-09-30 20:38:12,065 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:38:12,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:38:12,066 INFO L168 Benchmark]: Boogie Preprocessor took 30.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:38:12,066 INFO L168 Benchmark]: RCFGBuilder took 408.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:38:12,067 INFO L168 Benchmark]: TraceAbstraction took 243873.71 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.4 GB in the beginning and 892.3 MB in the end (delta: 542.2 MB). Peak memory consumption was 672.3 MB. Max. memory is 7.1 GB. [2018-09-30 20:38:12,071 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 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.34 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 30.34 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 408.89 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 243873.71 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.4 GB in the beginning and 892.3 MB in the end (delta: 542.2 MB). Peak memory consumption was 672.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (394states) and FLOYD_HOARE automaton (currently 64 states, 160 states before enhancement), while ReachableStatesComputation was computing reachable states (306 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 243.8s OverallTime, 80 OverallIterations, 78 TraceHistogramMax, 88.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 651 SDtfs, 38503 SDslu, 26387 SDs, 0 SdLazy, 12129 SolverSat, 303 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18802 GetRequests, 12482 SyntacticMatches, 0 SemanticMatches, 6320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 113.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=79, 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: 0.4s AutomataMinimizationTime, 79 MinimizatonAttempts, 312 StatesRemovedByMinimization, 78 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 139.4s InterpolantComputationTime, 31288 NumberOfCodeBlocks, 31288 NumberOfCodeBlocksAsserted, 1770 NumberOfCheckSat, 31130 ConstructedInterpolants, 15483 QuantifiedInterpolants, 77500744 SizeOfPredicates, 3315 NumberOfNonLiveVariables, 28977 ConjunctsInSsa, 6474 ConjunctsInUnsatCore, 158 InterpolantComputations, 2 PerfectInterpolantSequences, 1/796953 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/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-38-12-081.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-38-12-081.csv Completed graceful shutdown